Electrical Power (AQA GCSE Physics): Flashcards
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Practise the cards
12 cards from this deck
Definition of power
Definition of power
Rate at which energy is transferred
Unit of power
Unit of power
Watt (W)
Power and work done relationship
Power and work done relationship
Power is the rate at which work is done
Power proportionality to current and voltage
Power proportionality to current and voltage
Directly proportional
Power loss proportionality
Power loss proportionality
Proportional to resistance and to square of current
Formula for energy using power and time
Formula for energy using power and time
Formula for energy using charge and p.d.
Formula for energy using charge and p.d.
Formula for power from energy and time
Formula for power from energy and time
Formula for power from work done
Formula for power from work done
Unit for energy transferred
Unit for energy transferred
Joules (J)
Unit for time in power calculations
Unit for time in power calculations
Seconds (s)
Calculate: Toaster uses 700J in 50s. Power?
Calculate: Toaster uses 700J in 50s. Power?
14 W