Power (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes

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Power
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What is power defined as?

Rate of energy transfer

Power can also be defined as the rate at which what happens?

Work is done

Which formula correctly represents power?

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

What is the unit of power?

Watts (W)

What is the unit for energy transferred in the power formula?

Joules (J)

What is the unit for time in the power formula?

Seconds (s)

What power does 1 joule per second equal?

1 watt

In the formula P=WtP = \frac{W}{t}, what does PP represent?

Power

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

Motor A

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

Work done, joules (J)

Explore OCR GCSE Physics A, Combined (Gateway Science Suite) Revision Notes by Topics

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Energy Changes in a System

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Explore OCR GCSE Physics A, Combined (Gateway Science Suite) Exam Questions by Topics

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