Power (AQA GCSE Physics Combined Science): Quizzes

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Power
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What is power defined as?

Rate of energy transfer

Which formula correctly represents power?

P=EtP = \frac{E}{t}

What is the unit of power?

Watts (W)

What does 1 watt equal?

1 joule per second

Power can also be calculated using which formula?

P=WtP = \frac{W}{t}

In the formula P=EtP = \frac{E}{t}, what unit is EE measured in?

Joules (J)

Two motors do the same work. Motor A finishes faster. Which is more powerful?

Motor A

What does the variable tt represent in the power formula?

Time in seconds

In the formula P=WtP = \frac{W}{t}, what unit is WW measured in?

Joules (J)

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