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1.7.1a Energy stores and energy transfers

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Question 170

A machine has a very high efficiency. What does this mean?

A

A high proportion of the input energy is transferred to a useful energy store.

B

It converts all of the input energy into useful work.

C

It requires very little input energy to operate.

D

It transfers energy at a very fast rate.

Markscheme

1.7.1a Energy stores and energy transfers Questions

  1. IGCSE
  2. /Physics
  3. /1.7.1a Energy stores and energy transfers

229 exam-style questions on CIE IGCSE Physics 1.7.1a Energy stores and energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.

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