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1.7 Energy, work and power

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Question 313

A battery-powered toy train travels around a flat, horizontal circular track. During its journey, it speeds up, slows down, and stops several times, and its motor becomes warm. Which type of energy store does not change during this journey?

A

the chemical energy store of the battery

B

the gravitational potential energy store of the train

C

the thermal energy store of the train's motor

D

the kinetic energy store of the train

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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