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1.7.1a Energy stores and energy transfers

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Question 164

An electric motor is described as having a very high efficiency.

Which statement must be correct?

A

Most of the input energy is transferred into useful output energy.

B

It requires very little input power to operate.

C

It minimizes the time required to perform work.

D

It generates a large amount of thermal energy as waste.

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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