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1.7.1a Energy stores and energy transfers

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Question 167

An electric motor is described as being highly efficient.

Which statement correctly explains what this means?

A

It operates at a very high speed.

B

It transfers most of its input energy into useful output energy.

C

It requires very little input power to operate.

D

It stores most of its input energy as gravitational potential energy.

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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