Power (AQA GCSE Physics Combined Science): Flashcards
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10 cards from this deck
Definition of power
Definition of power
Rate at which energy is transferred or work is done
Power formula using energy transferred
Power formula using energy transferred
Power formula using work done
Power formula using work done
Symbol and unit for power
Symbol and unit for power
, watts (W)
Unit of energy () in power formula
Unit of energy () in power formula
Joules (J)
Unit of time () in power formula
Unit of time () in power formula
Seconds (s)
Unit of work done () in power formula
Unit of work done () in power formula
Joules (J)
What power is equivalent to 1 joule per second?
What power is equivalent to 1 joule per second?
1 watt
If two motors do the same work, which is more powerful?
If two motors do the same work, which is more powerful?
The motor that completes the work faster
Why is a faster motor more powerful?
Why is a faster motor more powerful?
Energy is transferred at a faster rate