What this practice covers
These questions are drawn from past CIE 0625 Physics papers and filtered to energy, work and power. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on energy, work and power, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Stopping at v² and not taking the square root.
- Using the total work done by a force when the question asks for the kinetic energy gained.
- Saying no energy is transferred when someone holds a heavy object still, and then saying work is done on it.
- Confusing power with energy, or with efficiency.
- Leaving a time in minutes or hours when calculating power.
- Using the final energy instead of the change in energy.
- Calling nuclear fission renewable because it emits no carbon dioxide.
- Saying energy is lost or used up rather than dissipated.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Energy, work and power revision notes.