Electricity & Magnetism Crossword

Changes potential difference of AC
The direction of any induced current is such as to opposes the change causing it
Maintain electrical contact between the split-ring commutator & power source
A long straight wire conductor wound into a coil
A device used to reverse current
Made from a material that retains it magnetism over long periods of time
Type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of wire wound into a coil
Substance containing iron, nickel & cobalt are attracted to magnet
Material that is unaffected by magnetic fields
Bar magnet bent into a U-shape
Component that opens a switch that turns off all current before the excess current can start a fire
Component that protects against electric shock by detecting the leaking current and turning off the current within 0.03 sec
An alternative path for current
The rate at which electrical energy is transferred by an electric circuit
A large unit of energy used to measure how much mains electrical energy is used in home or business
A piece of very thin wire that melts when the current passing through it is too high, thus breaking the circuit
Electromagnetic switches that control one electric circuit by opening and closing contacts in another circuit
A component made from semi-conductor material, which allows current to flow in only one direction through it
Current splits between the parallel components. Total current from the battery is equal to the sum of the currents through each component
A variable resistor can change the amount of resistance offered. When resistance increases in a rheostat, the amount of current that flows in the circuit decreases
Circuit components that have specific electrical resistance
Current through each component is the same and equal to the total current from the battery
The voltage across a conductor is directly proportional to the current through the conductor provided the temperature remains constant
The difference in the amount of potential energy per unit charge
Circuit component that measures the voltage in a circuit, connected in parallel
Circuit component that measures the resistance in a circuit
Electrons flow from the negative terminal to the positive terminal
The difference in potential that causes an electric current to flow. The energy that the battery can supply
The tendency of a conductor to oppose the flow of charge
Charge flows only in one direction
Two or more cells connected together
Current that flows from the positive terminal to the negative terminal
Circuit component that measures the current in a circuit, connected in series
Electrons change direction so that the current changes from positive to negative at a particular frequency
Flow of charge per unit time
Process in which a neutral metal object becomes charged by placing a charged object near it