Question Constellation Sign up for free AQA · GCSE · Physics · Higher
Power, Work and Time Relationship
Work is done by the whisk when it is used to mix food.
Write down the equation that links power (P), time (t) and work done (W).
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Marking points
- 1 Writes the correct relationship P = W/t (or power = work done/time).
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Why this answer loses marks
Multiplies work done by time to find power.
Power is a rate, so the work done must be divided by time.