Power =

1.   ?    volts x amps
2.   ?    volts/amps
3.   ?    amps/volts
4.   ?    amps - volts

Power is measured in

1.   ?    joules
2.   ?    watts
3.   ?    ohms
4.   ?    volts

To convert kilowatts to watts, you must

1.   ?    add 1000
2.   ?    multiply by 1000
3.   ?    take away 1000
4.   ?    divide by 1000

Heavy currents need big wires because:

1.   ?    Big wires are strong
2.   ?    Big wires are heavy
3.   ?    Big wires don't get so hot.
4.   ?    Big wires have a higher resistance

When electrical energy is passed through a resistor, electrical energy is turned into:

1.   ?    light
2.   ?    potential energy
3.   ?    heat
4.   ?    kinetic energy

Units for charge are:

1.   ?    amps
2.   ?    coulombs
3.   ?    volts
4.   ?    ohms

Charge =

1.   ?    current x time
2.   ?    current ÷ time
3.   ?    time ÷ current
4.   ?    time x time x current

A specially made weak link in a circuit is called

1.   ?    a circuit breaker
2.   ?    resistor
3.   ?    heating element
4.   ?    fuse

When working out the best fuse to use in a plug you must

1.   ?    work out the voltage and use the next value up.
2.   ?    work out the current and use the next value up.
3.   ?    work out the current and use the next value down.
4.   ?    work out the resistance and use the next value up.

Energy used depend on:

1.   ?    the voltage only
2.   ?    the voltage and the current only
3.   ?    the voltage, the current, and the time.
4.   ?    the voltage, the charge, and the time.