Final Study Guide 001292

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A voltage that is positive with respect to ground is a(n) _____ voltage. Correct!

Above ground

What is the smallest part of an element that still retains the properties of that element

An atom

A point that is used as a common connection for other parts of a circuit not actually driven into the ground is called a _____ ground. Correct!

Chasis

To symbolize a ground point made by physically driving an object such as a rod or pipe into the ground, a(n) _____ ground symbol is used.

Earth

In a series circuit, the sum of the voltage drops is _______ the applied voltage

Equal to

In a parallel circuit, the current is the same at any point in the circuit.

False

The amount of current flowing through each resistor is directly proportional to its resistance.

False

A voltmeter has a very ______ resistance connected in series with the meter movement

High

By observing the direction of current flow through the circuit, voltage _____ can be determined.

Polarity

The time base of the oscilloscope is calibrated in ________ per division

Seconds

In a parallel circuit, the total current flow is equal to the _____ of the currents through all the branches.

Sum

A kilowatt-kiloVARs recording meter will record true power or reactive power

True

The grounding prong of a plug should never be cut off or bypassed

True

What force pushes the electrons through a resistance in a circuit

Voltage

A series circuit has two resistors that dissipate 10 W and 15 W, respectively. What is the total power dissipation of the circuit?

25W

Aprox how many horsepower is an electrical device that is listed as 3000 watts

4

The sum of the currents in a parallel circuit must _____________ the total current.

Be equal to

An _______ ammeter operates on more than one range by connecting the meter movement to different shunts

Multirange

A series circuit has ____ paths for current flow

One

What force is demonstrated in objects with like charges

Repulsion

Assume a total current of 2 amperes flows in a circuit with three resistors. R1 has a value of 1400 ohms, R2 has a value of 200 ohms, and R3 has a value of 100 ohms, producing a total resistance of 80 ohms for the circuit. What is the amount of the current flow through resistor R1?

0.114

Assume a total current of 2 amperes flows in a circuit with three resistors. R1 has a value of 1000 ohms, R2 has a value of 240 ohms, and R3 has a value of 300 ohms, producing a total resistance of 80 ohms for the circuit. What is the amount of the current flow through resistor R3?

0.53

The greeks were the first to discover electricity about

2500 years ago

A parallel circuit is composed of two 60 Ω resistors. What is the total resistance?

30ohms

A two-resistor series circuit has an applied voltage of 100 V. The voltage across one of the resistors is 40 V. What is the voltage across the other resistor?

60v

In parallel circuits the voltage drop across any branch is the same as the ______

Applied Voltage

What force is demonstrated in objects with unlike charges

Attraction

Alternating current is

Bidirectional

A combination circuit is a circuit that contains

Both series and parallel components

What should be used to solve the unknown values in a combinaiton circuit

Both series circuit and parallel circuit rules

The d'Arsonval meter movement is operated by applying ________ current to the coil

DC

What type of current flows in only one direction

Direct Current

A lesser amount of current will flow through a low-value resistor, and a greater amount of current will flow through a high-value resistor.

False

To solve unknown values in a parallel circuit use sereies circuit rules for those sections that are connected in a parallel circuit

False

Voltage flows through an electric circuit like water flows through a pipe

False

In voltage divider circuits, what is often used to provide a common reference point to produce voltages?

Ground

One coulomb per second is equal to

One ampere

An ammeter is connected in __________ with the load to permit the load to limit current flow

Series

What can be found whena combination circuit has been reduced to a simple parallel circuit

Total resistance

In a combination circuit, to identify series and parallel elements, you should ______

Trace the current paths

Direct current is

Unidirectional

What is another term for electromotic force EMF

Voltage

Matter can exist in only two states

false

The unit of resistance to current flow is the

ohm

The amount of electrical power being used in a circuit is measured in

watts

Assume a total current of 2 amperes flows in a circuit with three resistors. R1 has a value of 1400 ohms, R2 has a value of 200 ohms, and R3 has a value of 100 ohms, producing a total resistance of 80 ohms for the circuit. What is the amount of the current flow through resistor R2?

0.800

Assume a total current of 2 amperes flows in a circuit with three resistors. R1 has a value of 1400 ohms, R2 has a value of 200 ohms, and R3 has a value of 100 ohms, producing a total resistance of 80 ohms for the circuit. What is the amount of the current flow through resistor R3?

1.600

A parallel circuit is composed of a 10 Ω and a 22 Ω resistor. It has a voltage of 60 V. What is the current in the 10 Ω resistor?

6A

What is the applied voltage in a series cicuit with two resistors of 25v and 60v

85v

A junction point of current paths is often called

A node

A method for finding total resistance of parallel resistors is _____.

All of the above

What type of current reveres its direction of flow at regular intervals

Alternating

A test meter that uses a scale and pointer to indicate values is an

Analog meter

In series circuits the ______ voltage is equal to the sum of the voltage drops across all the resistors

Applied

A complete circuit is often referred to as an ______ circuit

Closed

In a series circuit, the total current flow is equal to the sum of the currents through all of the circuit branches.

False

The low impedance voltage tester is most suitable for use in ________

High power circuits

Imagine a water system with a holding tank, pump, and return lines. What would happen to the resistance to flow if a return path is added to the system?

It lessens

The voltage section and the time base are the two main sections of what measuring instrument

Oscilloscope

Circuits that have more than one path for current flow are _____ circuits.

Parallel

In ________ circuits the total resistance is equal to the reciprocal of the sum of the reciprocals of the branch resistances

Parallel

One rule for ______ circuits states that the voltage is the same across each branch of the circuit

Parallel

What produces a graph of metered values during a certain length of time

Recording meter

Solving combination circuits includes a step in which you ______

Reduce the circuit to a simper circuit

What type of circuit is generally occurs when the conductors leading from and back to the power source become connected

Short

A combination circuit can be reduced or simplified to a simple parallel circuit.

True

A combination circuit contains both series and parallel elements.

True

A node is a junction point where the current splits when reached

True

Matter has mass and occupies space

True

The amount of power (W) used by each resistor can be found by using Ohm's law.

True

To calculate the amount of current flow through a resistor using the current divider formula, you need to know the values of the resistor, total resistance for the circuit, and total current of amperes flow. Correct!

True

Tracing the current path in a combination circuit will identify the series and parallel elements.

True

Assume a total current of 2 amperes flows in a circuit with three resistors. R1 has a value of 1000 ohms, R2 has a value of 240 ohms, and R3 has a value of 300 ohms, producing a total resistance of 80 ohms for the circuit. What is the amount of the current flow through resistor R2?

0.67

What law states that the force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them

Coulombs Law

An increase in _____, not resistance, results in an increase of load.

Current

In series circuits, the ______ is the same at any point in the circuit

Current

The term "load" refers to the amount of _____ in a circuit branch.

Current

Parallel circuits are also called _____.

Current Dividers

The rule known as ___________ states that in parallel circuits the total current flow in the circuit is equal to the sum of the currents through all the branches.

Current adds

Assume a current of 1 ampere enters a parallel circuit at Point A. This 1 ampere of current will ________________between Resistors R1 and R2 and then recombine at Point B.

Divide


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