1.9 Energy And Power (GCSE Physics)

The following is a GCSE Physics test covering '1.9 Energy And Power'

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Question 1

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If 10,000 joules of energy is transferred by a motor in 10 seconds, what’s the power?

Which energy transfer is involved when a bulb lights up?

A 100 W bulb transfers 2000 J of energy. How much time is needed?

How does increasing power affect the rate of energy transfer?

Order of magnitude calculations give a value rounded to:

What is the equivalent of 1 kilowatt in watts?

What does 1 watt equal to in terms of joules and seconds?

Which formula is correct to calculate power?

A machine has 300 W input power and 100 W of useful output. How much power is wasted?

What type of device typically converts energy transfer faster?

What is the SI Unit used for power?

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