Power in circuits (Edexcel GCSE Physics): Flashcards
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Definition of power
Definition of power
Rate at which energy is transferred
Power in terms of work done
Power in terms of work done
Rate at which work is done
Unit of power
Unit of power
Watt (W)
Formula: Energy transferred using power
Formula: Energy transferred using power
Formula: Power using energy and time
Formula: Power using energy and time
Formula: Energy using charge and p.d.
Formula: Energy using charge and p.d.
Formula: Power using work done
Formula: Power using work done
Unit of energy transferred
Unit of energy transferred
Joules (J)
Unit of time in power equations
Unit of time in power equations
Seconds (s)
Unit of work done
Unit of work done
Joules (J)
Power's relationship to current & voltage
Power's relationship to current & voltage
Directly proportional to both
Power loss proportionality
Power loss proportionality
Proportional to resistance and to square of current