PHYS212 Reading Quizzes

In analyzing electric circuits containing a battery and at least one resistor, what is the change in potential across a resistor in the direction of the current?

-iR

A circuit with current increasing at a rate of 4 A/s contains an inductor, L. If the induced emf is -2 V, what is the inductance of the inductor?

0.5 H

At what orientation angle, relative to the magnetic field direction, does the magnetic potential energy of a magnetic dipole have its largest value?

180°

Four point charges are placed at the corners of a square. Each charge has the identical value +Q. The length of the diagonal of the square is 2a. What is the electric potential at the center of the square?

4kQ/a

Two solenoids, A and B, have the same length and cross-sectional area. Solenoid B has three times the number of turns per unit length. What is the ratio of the self-inductance of solenoid B to that of solenoid A?

9

At what orientation angle of a magnetic dipole, relative to the magnetic field direction, does the torque on the dipole have its largest value?

90°

What is the primary difference between an ideal emf device and a real emf device?

A real emf device has an internal resistance, but an ideal emf device does not.

Which of the following statements concerning electric field lines is false? A) Electric field lines between two charged particles are often curved. B) Electric field lines are a method proposed by Michael Faraday to map the electric field at various locations. C) Electric field lines can be used to indicate the local magnitude of the electric field. D) Electric field lines are always directed radially away from a positively-charged particle. E) An electric field line indicates the direction of the force on an electron placed on the line.

An electric field line indicates the direction of the force on an electron placed on the line.

Which one of the following statements is not a characteristic of a voltmeter? A) The voltmeter measures the voltage between two points in a circuit. B) The voltmeter is designed to measure nearly the same voltage that is present when the meter is not connected. C) The voltmeter is not placed directly into a circuit (that is, in series). D) The voltmeter is designed to draw very little current from the circuit being measured. E) An ideal voltmeter has almost no resistance.

An ideal voltmeter has almost no resistance.

Which of the following statements concerning resonance in an RLC circuit is true? A) At the resonant frequency, the rms current is at a minimum and the impedance is at a maximum. B) At the resonant frequency, the rms current is at a maximum and the impedance is at a minimum. C) At the resonant frequency, the rms current is at a maximum and the impedance is at a maximum. D) At the resonant frequency, the rms current is at a minimum and the impedance is at a minimum.

At the resonant frequency, the rms current is at a maximum and the impedance is at a minimum.

A dipole is located within a uniform electric field and aligned perpendicular to the field. Why is the electrostatic potential energy equal to zero joules in this situation?

Because the zero potential energy configuration is arbitrary, you may choose it to be anything, and this is the standard convention.

The unit of capacitance is the farad (F). Which of the following combinations of units is equivalent to the farad? A) N/C B) V/C C) C/V D) J/C E) N/s

C/V

The unit of electrical current is the ampere (A). Which one of the combinations of units below is equivalent to the ampere? A) C·s B) C/s C) N·m/s D) J·s E) kg·m²/s

C/s

What happened in the field of superconductivity in 1986?

Ceramic materials were found that are superconducting at much higher temperatures than metals or alloys.

Which one of the following statements concerning charge distributions is false? A) Charge distributions consist of a very large number of closely spaced charges. B) Charge distributions may be uniform arrangements of charges along a line, over a surface, or throughout a volume. C) Calculus provides important tools for determining electric fields due to charge distributions. D) Charge distributions are treated as being composed of discrete charges. E) In dealing with charge distributions, it is often more useful to speak in terms of a charge density rather than the total charge.

Charge distributions are treated as being composed of discrete charges.

Which of the following laws or principles can be derived from Gauss' law? A) Amonton's law B) Coulomb's law C) Carnot's principle D) definition of a fluxon E) electric flux principle

Coulomb's law

By which of the following methods could the current in a given circuit be doubled? A) Either double the resistance or double the voltage. B) Reduce either the voltage or the resistance to half of the initial value. C) Either double the voltage or reduce the resistance to half of its initial value. D) Either double the resistance or reduce the voltage to half of its initial value.

Either double the voltage or reduce the resistance to half of its initial value.

Which one of the following statements concerning emf is true? A) Emf is the work done in moving the current from one terminal to the other of an emf device. B) Emf is the work done per unit charge in moving current from one terminal to the other of an emf device. C) Emf is the force exerted on a single charge to move it from one terminal to the other of an emf device. D) Emf is the total charge moving from one terminal to the other of an emf device. E) Emf is the electromagnetic force that is exerted between the terminals of an emf device.

Emf is the work done per unit charge in moving current from one terminal to the other of an emf device.

Why must the electric field at the surface of a conductor be perpendicular to the surface?

If it was not perpendicular, then charges on the surface would be moving.

Which one of the following statements concerning the electric force is true? A) Two charged objects with identical charges will exert an attractive force on one another. B) It is possible for a small negatively-charged particle to float above a negatively charged surface. C) A positively-charged object is attracted toward another positively-charged object. D) The electric force cannot alter the motion of an object. E) Newton's third law of motion does not apply to the electrostatic force.

It is possible for a small negatively-charged particle to float above a negatively charged surface.

What is the best choice for the shape of a Gaussian surface? A) spherical B) cylindrical C) cubic D) It should be one that encloses the smallest volume. E) It should be one that matches the symmetry of the charge distribution.

It should be one that matches the symmetry of the charge distribution.

A negatively-charged particle is slowly moving as it enters a region that has a constant magnetic field. If the velocity of the particle is initially perpendicular to the magnetic field, what will be the subsequent motion of the particle?

It will follow a circular path in the plane perpendicular to the magnetic field lines.

Which one of the following statements concerning equipotential surfaces is false? A) All points on an equipotential surface have the same electric potential. B) No work is done by the net electric force as a charge moves from one equipotential surface to another. C) The electric field created by one or more charges is everywhere perpendicular to the associated equipotential surfaces. D) The electric field created by one or more charges points in the direction of decreasing potential. E) There is a quantitative relationship between the electric field and the associated equipotential surfaces that surround one or more charges.

No work is done by the net electric force as a charge moves from one equipotential surface to another.

Which one of the following statements concerning Ohm's law is true? A) Ohm's law is true for all electronic devices. B) Ohm's law is true when the resistivity of a material is independent of the applied electric field. C) Ohm's law is true when the resistance varies linearly with the magnitude of the applied electric field. D) Ohm's law is true for all conductors. E) Ohm's law is true for all materials.

Ohm's law is true when the resistivity of a material is independent of the applied electric field.

The plane of a conducting loop is oriented parallel to the x-y plane. A magnetic field is directed in the -z direction. Which one of the following actions will not change the magnetic flux through the loop? A) Decrease the area of the loop. B) Decrease the strength of the magnetic field. C) Increase the strength of the magnetic field. D) Rotate the loop about an axis that is directed in the z direction and that passes through the center of the loop. E) Rotate the loop about an axis that is directed in the y direction and that passes through the center of the loop.

Rotate the loop about an axis that is directed in the z direction and that passes through the center of the loop.

Which one of the following statements concerning the electric field is false? A) The SI unit of the electric field is the newton per meter (N/m). B) The electric field is a vector quantity. C) At a given point, a charged particle will experience a force if an electric field is present at that location. D) If a positively-charged particle is placed at a location where the electric field is directed due north, it will be accelerated due north. E) The magnitude of the electric field at a particular location due to a particular charged particle is inversely proportional to the square of the distance of the particle from that location.

The SI unit of the electric field is the newton per meter (N/m).

What happens to a capacitor when an insulator is inserted between the two conductors of the capacitor?

The capacitance of the capacitor increases.

When applying Gauss' law for a capacitor containing a dielectric, which of the following statements is false? (Latter part of section 6.) A) The electric field vector is multiplied by κ, the dielectric constant. B) The charge enclosed by the Gaussian surface includes both the free charge and the induced surface charges. C) Gauss' law for a dielectric includes the ability to account for varying dielectric constant over the Gaussian surface. D) Gauss' law for a dielectric is the most general form of Gauss' law. E) Gauss' law for a dielectric can be applied to many types of capacitors.

The charge enclosed by the Gaussian surface includes both the free charge and the induced surface charges.

Capacitor B has one-half the capacitance of capacitor A. How does the charge on capacitor A compare to that on B when the two are connected in series to a battery for a long time?

The charge on capacitor A is the same as the charge on capacitor B.

The plates of a parallel plate capacitor are fully charged by connecting it to a battery. An insulator with a dielectric constant of 1.0 (think about that value) is then inserted between the plates (while still connected to the battery). What is the effect on the charge on the plates of the insertion of the insulator?

The charge on the plates remains unchanged.

What effect, if any, does increasing the resistance in an RC circuit have on the charging of the capacitor?

The charging time will increase as the resistance is increased because the rate at which charges are moving to the capacitor decreases.

Which one of the following statements concerning the conventional direction of current is true? A) The conventional direction of current is the hypothetical direction of movement of positive charges through the wires of an electric circuit. B) The conventional direction of current is the direction of movement of electrons through the wires of an electric circuit. C) The conventional direction of current is always a clockwise movement around a circuit. D) The conventional current is the one that moves in a dc circuit and an unconventional current is one that moves in an ac circuit.

The conventional direction of current is the hypothetical direction of movement of positive charges through the wires of an electric circuit.

Which one of the following statements is true concerning resistors connected in series within an electric circuit? A) The potential difference across each of the resistors is the same. B) The current through each of the resistors is the same. C) The energy dissipated by each of the resistors is the same. D) The resistance of each of the resistors is the same. E) The resistivity of each of the resistors is the same.

The current through each of the resistors is the same.

Which one of the following statements concerning the electric dipole moment is false? A) The dipole moment is a scalar quantity. B) The dipole moment has units of C·m. C) The dipole moment combines two intrinsic properties of an electric dipole, the distance between the charges and the amount of charge on each object. D) The dipole moment is directed from the negative charge toward the positive charge of the dipole. E) The direction of the dipole moment is used to specify the orientation of the dipole.

The dipole moment is a scalar quantity.

How does the direction of the electric field created by a dielectric inserted between the plates of a parallel plate capacitor compare to the direction of the electric field created by the charged plates?

The direction of the field generated by the dielectric is opposite that due to the plates (weakening the electric field overall).

Which one of the following statements concerning the electrical and magnetic energies stored in an LC circuit is false? Assume for the following that ϕ=0. A) The maximum values of both the electric and magnetic energies is Q2/(2C). B) The electric energy is at its minimum when the magnetic energy is zero joules. C) At a time t, the sum of the electric and magnetic energies is a constant equal to Q2/(2C). D) The electric energy varies in time with the factor cos2(ωt). E) The magnetic energy is at its maximum when the electric energy is zero joules.

The electric energy is at its minimum when the magnetic energy is zero joules.

Wires A and B are identical, except that the length of wire A is one-half that of wire B. If the same potential difference is applied between the two ends of each wire, how does the electric field within wire A compare to that in wire B?

The electric field in wire A is twice that in wire B.

Which of the following statements concerning the electric field inside a conductor is true? A) The electric field inside a conductor is never zero. B) The electric field inside a conductor is always zero. C) The electric field inside a conductor is always zero if charges inside the conductor are not moving. D) The electric field inside a conductor is always zero unless there are excess charges inside the conductor.

The electric field inside a conductor is always zero if charges inside the conductor are not moving.

Which of the following occurs when part of an electric circuit is connected to ground? A) The ground acts like a battery, so the current in the circuit increases. B) Any current in the circuit flows to the ground. C) The electric potential at the connection point is equal to zero volts. D) The electric potential difference across the terminals of any batteries in the circuit is equal to zero volts. E) The ground provides a source for more electrons to flow into the circuit.

The electric potential at the connection point is equal to zero volts.

Consider two isolated conductive metal spheres. Each carries the same amount of excess charge +Q, but one has a radius that is five times greater than the other. How does the electrostatic potential of the two spheres compare?

The electrostatic potential of the larger sphere is lower than the smaller sphere.

The current in an oscillating LC circuit is zero at a particular moment. Which one of the following statements is true? A) The charge on the capacitor is equal to zero coulombs. B) Charge is moving through the inductor. C) The energy is equally shared between the electric and magnetic fields. D) The energy in the electric field is maximized. E) The energy in the magnetic field is maximized.

The energy in the electric field is maximized.

Three capacitors are connected in parallel to a battery. How is the equivalent capacitance for this circuit determined?

The equivalent capacitance is the sum of the three capacitances.

Consider the following hypothetical situation: An infinitely long line of charge (uniform density) is located along the central axis of an infinitely long hollow cylinder of charge (uniform density). Which of the following statements concerning the force on the line of charge is true? A) The force on the line of charge is infinite. B) The force on the line of charge is zero newtons. C) The force depends on the radius of the cylinder. It will be larger if the cylinder radius is large. D) The force depends on the radius of the cylinder. It will be smaller if the cylinder radius is large.

The force on the line of charge is zero newtons.

For an RLC circuit in the limit of very high frequency, what is the effective behavior of the capacitor and the inductor in the circuit?

The inductor acts like a very large resistance and the capacitor acts like a very small resistance.

The coils of a solenoid are stretched so that the length of the solenoid is twice its original length, but the total number of turns is unchanged. Assuming the same current is passed though the solenoid before and after it is stretched, how does the magnetic field inside the solenoid change, if at all, as a result of the stretching?

The magnetic field after the stretching is one-half the value it was before stretching.

Two circular loops carry identical currents, but the radius of one loop is twice that of the other. How do the magnetic fields at the centers of the loops compare?

The magnetic field at the center of the larger loop is one-half that at the center of the smaller loop.

When the distance between charged parallel plates of a capacitor is d, the capacitance is C. If the distance is increased to 2d, how will the capacitance change, if at all?

The new capacitance would be one-half of the previous value.

Points A, B, and C lie along a line from left to right, respectively. Point B is at a lower electric potential than point A. Point C is at a lower electric potential than point B. Which one of the following statements best describes the subsequent motion, if any, of a positively-charged particle released from rest at point B? A) The particle will move at constant velocity in the direction of point A. B) The particle will move at constant velocity in the direction of point C. C) The particle will remain at rest. D) The particle will accelerate in the direction of point A. E) The particle will accelerate in the direction of point C.

The particle will accelerate in the direction of point C.

A battery charges capacitor A until the potential difference between the two conductors of the capacitor is V. A second, identical capacitor, labeled B, is charged by a different battery until the potential difference of capacitor B is 2V. How does the stored energy of capacitor B compare to that of capacitor A?

The stored energy of capacitor B is four times that of capacitor A.

Which one of the following statements concerning Ampere's law for static magnetic fields is false? A) The strength of the magnetic field produced by the current is not dependent on the distance from the current that produces the magnetic field. B) A closed path of arbitrary shape is constructed around the current. C) This law may be applied to any current geometry that produces a magnetic field that does not change with time. D) The component of the magnetic field that is parallel to the closed path is used in Ampere's law. E) The permeability of free space is a constant that appears in Ampere's law.

The strength of the magnetic field produced by the current is not dependent on the distance from the current that produces the magnetic field.

An electron is traveling due south when it enters a uniform magnetic field directed due west. Which of the following statements concerning this situation is false? A) The subsequent motion of the electron will be the same as if there were an electric field directed due west and no magnetic field present. B) The electron will follow a curved path. C) The direction of the magnetic force on the electron will vary with time. D) The magnitude of the magnetic force will be constant with time. E) The direction of the magnetic field and the direction of the magnetic force on the electron are perpendicular to one another.

The subsequent motion of the electron will be the same as if there were an electric field directed due west and no magnetic field present.

While analyzing the currents within a circuit containing multiple components (such as batteries, resistors, etc.), which of the following statements concerning currents flowing into a single junction must be true? A) The sum of the currents entering any junction must equal the total current through the battery. B) The sum of the currents entering the junction must equal zero. C) The sum of the currents entering the junction must equal the sum of the currents exiting the junction. D) The currents entering the junction must follow only one of the possible exit paths. E) The currents entering the junction may exit back along the path from which they entered.

The sum of the currents entering the junction must equal the sum of the currents exiting the junction.

In July, Joe set up his fixed array of solar panels to maximize the amount of electricity output from the array when the Sun was high in the sky. Unfortunately, Joe finds that the array doesn't operate as well during the winter months. What is the most likely cause of Joe's winter problem?

The sun is lower in the sky during the winter, so sunlight strikes the solar panels at an angle.

When a battery, a resistor, a switch, and an inductor form a circuit and the switch is closed, the inductor acts to oppose the change in the current. How is the time constant of the circuit affected by doubling the resistance in the circuit?

The time constant would decrease to one-half its original value.

When a battery, a resistor, a switch, and an inductor form a circuit and the switch is closed, the inductor acts to oppose the change in the current. How is the time constant of the circuit affected by doubling the inductance in the circuit?

The time constant would increase to twice its original value.

Why does the electric field due to a dipole decrease more rapidly with increasing distance than that for a single charge?

The total charge of the dipole is neutral (zero).

How does the capacitance of two identical capacitors connected in series compare to that of one of the capacitors?

The two capacitors connected in series have a smaller capacitance.

Consider two parallel wires carrying current in the same direction. Which one of the following statements is true concerning this situation? A) The two wires will attract each other, even if no external magnetic field is applied to the wires. B) The two wires will repel each other, even if no external magnetic field is applied to the wires. C) The two wires will attract each other only if an external magnetic field is applied to the wires. D) The two wires will repel each other only if an external magnetic field is applied to the wires. E) The wires will be neither attracted nor repelled from each other when no external magnetic field is applied to the wires.

The two wires will attract each other, even if no external magnetic field is applied to the wires.

Consider two parallel wires carrying current in opposite directions. Which one of the following statements is true concerning this situation? A) The two wires will attract each other, even if no external magnetic field is applied to the wires. B) The two wires will repel each other, even if no external magnetic field is applied to the wires. C) The two wires will attract each other, only if an external magnetic field is applied to the wires. D) The two wires will repel each other, only if an external magnetic field is applied to the wires. E) The wires will be neither attracted nor repelled from each other when no external magnetic field is applied to the wires.

The two wires will repel each other, even if no external magnetic field is applied to the wires.

Which of the following scientists is credited with the discovery of the electron? A) Planck B) Curie C) Maxwell D) Thompson E) Fermi

Thompson

The electric potential at the surface of a conducting, spherical shell of radius R is V relative to Earth ground. What is the electric potential at the center of the shell?

V

The SI unit of power is the watt. Which of the following units are equivalent to the watt? A) V∙A B) J/C C) C/s D) V/s E) A/s

V∙A

Complete the following statement: Lenz's law indicates that induced currents form to oppose

a change in the magnetic flux.

A circuit contains a battery, a switch, an inductor, and a resistor connected in series. Initially, the switch is open. At which of the following times does the energy stored in the inductor have the largest value? A) before the switch is closed B) immediately after the switch is closed C) a long time after the switch is closed D) none of the above

a long time after the switch is closed

What is capacitance?

a measure of how much charge is needed to produce a certain potential difference across a capacitor

Complete the following statement: Faraday's law indicates that a changing magnetic field produces

an electric field.

A sphere has a radius R and a total charge +Q uniformly distributed throughout its volume. Where is the electric potential of the sphere a minimum?

at infinity

An alternating current is set up in an LRC circuit. For which of the following circuit elements does the current lead the voltage by 90°? A) inductor only B) resistor only C) capacitor only D) resistor and capacitor only E) inductor, resistor, and capacitor

capacitor only

To make silicon useful for electronic circuits, impurity atoms must be added. What is the name of this process?

doping

What is the name of the unit of energy that is the amount by which the electric potential energy of an electron changes when it moves through a potential difference of one volt?

electron volt (eV)

Complete the following statement: Around any closed-circuit loop, the sum of the potential drops

equals the sum of the potential rises.

What unit is used for inductance?

henry (H)

A charged particle is moving in a magnetic field. What is the direction of the force on the particle due to the magnetic field?

in a direction that is perpendicular to both the magnetic field and the velocity

At a distance R from a current-carrying wire, what is the direction of the magnetic field relative to the wire?

in a direction that is perpendicular to both the wire and to the radial direction

In a circuit containing an emf, a resistor, and an inductor, where is the magnetic potential energy stored?

in the magnetic field

In the fabrication of an electrical extension cord, the manufacturer wants to reduce the overall resistance of the wires in the extension cord. Which of the following changes would result in the lowest resistance? A) decrease the diameter of the wires B) increase the diameter of the wires C) choose a metal wire with a larger value of resistivity D) increase the length of the extension cord

increase the diameter of the wires

Which of the following may be determined using Ampere's law? A) electric fields due to current-carrying wires B) magnetic forces between two current-carrying wires C) magnetic fields due to current-carrying wires D) magnetic forces acting on charged particles E) magnetic fields due to permanent magnets

magnetic fields due to current-carrying wires

The text makes a comparison between an LC circuit and a block-spring system. In this analogy, the inductance corresponds to which of the following parameters for the block-spring system? A) mass B) spring constant C) velocity D) position E) spring potential energy

mass

Which one of the following terms is used for the effect in which a changing current in one circuit induces an emf in another circuit? A) self-induction B) coherence C) interference D) Lenz effect E) mutual induction

mutual induction

Which one of the following quantities can be measured by performing a Hall effect measurement? A) magnetic monopole strength B) charge of the electron C) number density of charge carriers D) acceleration of an electron E) work function

number density of charge carriers

Which of the following best describes the term "forced oscillations"? A) oscillations requiring an applied force B) oscillations that occur at a frequency other than the natural frequency of the circuit C) oscillations that occur in the windings of the inductor within an LRC circuit D) oscillations that occur at the natural frequency of the circuit E) oscillations that occur within the battery of an LRC circuit

oscillations that occur at a frequency other than the natural frequency of the circuit

Complete the following sentence: When a positively-charged particle is released from rest in a region that has a magnetic field directed due east, the particle will

remain at rest.

Which pair of terms correctly fills the blanks in the following sentence? ________ is a property of an object while ________ is a property of a material. A) resistivity, conductivity B) current, resistance C) resistance, current D) resistance, resistivity

resistance, resistivity

An alternating current is set up in an LRC circuit. For which of the following circuit elements are the current and voltage in phase? A) inductor only B) resistor only C) capacitor only D) resistor and capacitor only E) inductor, resistor, and capacitor

resistor only

Silicon is an example of what type of material?

semiconductor

For a cylindrical capacitor, the capacitance does not depend on which of the following values? A) the permittivity constant B) the radius of the inner conductor C) the amount of charge on the conductors D) the radius of the outer conductor E) the length of the cylinder

the amount of charge on the conductors

Complete the following statement: Current density is a measure of

the amount of current flowing through a cross-sectional area.

Which of the following phrases best describes the term "magnetic flux"? A) the direction of the magnetic field relative to a surface B) the amount of magnetic field that passes through a surface C) the number of magnetic dipoles moving through a wire D) the flow of magnetons in space E) another name for the magnetic field

the amount of magnetic field that passes through a surface

Complete the following statement: When a dielectric with constant κ is inserted between the plates of a charged isolated capacitor (that is, not still connected to the battery)

the electric field between the plates is reduced by a factor of κ.

Which of the following phrases best describes the term "impedance"? A) the resistance to the movement of charge carriers B) the resistance of a capacitor C) the resistance of an inductor D) the internal resistance of a battery within an LRC circuit E) the generalized expression that combines all resistances within a circuit

the generalized expression that combines all resistances within a circuit

Which one of the following phrases best describes the electric potential of a charged particle? A) the total force exerted on or by the charged particle B) the force per unit charge C) the potential energy of the particle relative to infinity D) the potential energy per unit charge E) the potential energy per unit force on the particle

the potential energy per unit charge

Which one of the following is a primary consideration in determining the capacitance of a parallel-plate capacitor? A) the size and separation of the plates B) the potential difference across the plates C) the shape of the plates D) the particular materials used to fabricate the plates

the size and separation of the plates

Which force is responsible for holding together the protons in the nucleus of an atom? (See the Sample Problem called "Mutual electric repulsion in a nucleus.") A) the electrostatic force B) the gravitational force C) the weak nuclear force D) the strong nuclear force E) No force is necessary.

the strong nuclear force

Which one of the following quantities remains constant for a given LC circuit? A) the energy stored in the capacitor B) the energy stored in the inductor C) the current flowing in the circuit D) the sum of the energy stored in the capacitor and that in the inductor E) the energy dissipated in the circuit

the sum of the energy stored in the capacitor and that in the inductor

A spherical Gaussian surface of radius R is surrounding a particle with a net charge q. If the spherical Gaussian surface is replaced by a cube, under what conditions would the total electric flux through the sides of the cube be the same as through the spherical surface? A) under all conditions B) if the sides of the cube are of length R C) if the sides of the cube are of length 2R D) if the diagonals of the cube are of length 2R E) under no conditions

under all conditions

An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the force exerted on the electron once it has entered the field?

upward

Consider the following quantities: (1) mass, (2) velocity, (3) charge, and (4) magnetic field strength. Upon which of these quantities is the force on a charged particle moving in a magnetic field dependent?

velocity, charge, and magnetic field strength

Which of the following units are the SI units for the electric potential? A) ampere (A) B) newton/coulomb (N/C) C) joule (J) D) gauss (G) E) volt (V)

volt (V)

Which of the following choices is the SI unit for magnetic flux? A) gauss (G) B) tesla (T) C) weber (Wb) D) lumen (L) E) fluxon (Fl)

weber (Wb)

A long wire carries a current toward the north in a magnetic field that is directed vertically downward. What is the direction of the magnetic force on the wire?

west