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100
ion
What is an atom or a group of atoms that carry a positive or negative electric charge
100
circuit
What is a closed conducting loop in which electric current can flow continually?
100
static charge
What is an imbalance of electric charge on an object?
100
alternating current
What is electric current that changes its direction repeatedly
100
electric motor
What is a device that uses the interaction between electricity and magnetism to produce motion?
200
a conductor
What is a substance or body capable of transmitting light, electricity, or sound?
200
parallel circuit
What is a circuit that has more than one path for electric current to follow?
200
resistance
What is the opposition offered by an substance to the passage through it of an electrical current
200
direct current
What is electric current that flows only in one direction
200
magnetism
What is a group of atoms with their magnetic poles pointed in the same direction
300
electric current
What is the flow of electic charge, measured in amperes
300
electric discharge
What is a rapid movement of excess charge from one place to another?
300
electric field
What surrounds every electric charge and exerts forces on other electric charges?
300
magnetisphere
What is the magnetic field around Earth that extends into space
300
compass
What is a magnetic needle that is free to turn
400
voltage
What is an electric force measured in volts?
400
series circuit
What is a circuit that has only one path for electric current to follow?
400
electric power
What is the rate at which electrical energy is converted into other forms of energy, measured in watts or kilowatts?
400
electric generator
What is a device that uses induction to produce electric power
400
electromagnet
What is a current-carrying wire wrapped around an iron core
500
insulator
What is a material (rubber or glass) that is a poor conductor of electricity or heat
500
Ohm's Law
What states that the current in a circuit equal the voltage divided by the resistance in the circuit?
500
electric current
What is the flow of electric charge, measured in amperes?
500
magnetic domain
What are imaginary lines of force around a magnet?
500
transformer
What is an electrical device that changes the voltage of alternating current
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