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1.7.1a Energy stores and energy transfers

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Question 114

An electric motor is described as being highly efficient.

What does this mean?

A

It transfers a large proportion of total input energy into useful kinetic energy.

B

It uses an extremely small amount of total electrical energy.

C

It produces a large amount of wasted thermal energy.

D

It rotates at a very high speed.

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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