AC
An electronic circuit has resistance of 20. The current is measured to be 6A. How many volts are applied to the circuit?
120
An electric motor is running on 120b. The current is measured to be 2A. How many ohms of resistance is the motor.
60
What type of fixed resistor is made from a compound of carbon graphite and resin bonding material?
Composition Carbon
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?
Coulomb's
When a magnetic material's molecules are all lined up, and increases in magnetic field strength, the material has reached _________.
Saturation
The measure of a material's resistance to magnetism is known as _________.
Tolerance
The strength of an electromagnet is primarily proportional to its_________.
core resistance
The angular difference between true north and magnetic north is known as the angle of _______.
declination
If an object is placed in the field of a strong electromagnet connected to anAC line, the object will be _________.
demagnetized
What is the maximum number of valence electrons in an atom?
eight
What type of magnet depends on flowing current to produce a magnetic field?
electromagnet
Insulation are the only materials that can hold _________ stationary.
electrons
What type of fixed resistor is made by combining metal with glass and then applying it to a ceramic base as a thick film?
metal glaze
The nucleus of an atom contains ___________.
neutrons and protons
In a _______ circuit, the voltage stays the same, but in a _____ circuit, the current stays the same .
parallel, series
The basic law of physics states that like charges________ and opposite charges_________.
repel ;attract
The semiconductor material used as a coating on copy machine drums is _________.
selenium
There is very little resistance and a large amount of current flows in a(n) _________.
short
If a circuit is open, current _________ flow
will not
What type of fixed resistor is made by winding a piece of resistive wire around a ceramic core?
wire-wound
What type of resistor are generally used when a high power rating is needed?
wire-wound
What color used as the multiplier band means to divide the combined first two numbers by 10?
gold
If a thundercloud has a positive charge, the current in the lightning bolt will flow from the_________.
ground to the cloud
The neutral conductor is also referred to as the _________ conductor.,
grounded
the velocity of AC through. a conductor is _________ the speed of light.
less than
What type of fixed resistor is made by applying a film of metal to a ceramic rod in a vacuum?
metal film
The unit of resistance to current flow is the __________.
ohm
A conductor is mad from a material that contains between ________ valence electrons.
one and three
What is another term for a variable resistor?
potentiometer
When an object protected by a lightning _________i is struck by a lightning bolt, it will bleed the lightning discharge to ground before the protected object can be harmed.
rod
The three substances that form natural magnets are _________.
Iron, nickel, and cobalt
In the English system, the total force producing a magnetic field is the__________.
Magnetomotive force
In a clothes dryer, the greatest static charges generally are built up on_________ fabrics.
Man-made
The statement, "In a DC circuit, the current is directly proportional to voltage and inversely proportional to resistance." is known as _________Law.
Ohm's
Alternating current is described as ___________
bidirectional
Alightning protection device that is grounded at one end, with the other end close to but not touching the object to be protected, is called a lightning ________.
Arrestor
A precipitator is a type of ___________.
air filter
What is the smallest part of an element that still contains the properties of an element?
an atom
Static electricity refers to electrons that _________ moving.
are
What force is demonstrated in objects with unlike charges?
attraction
The ________ of a resistor indicates the plus and minus limits of a resistor's ohmic value.
reluctance
