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1.7 Energy, work and power

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Question 347

An electric hoist lifts a heavy load vertically. In which of the following scenarios is the average power developed by the hoist the least?

A

lifting it a greater distance in a shorter time

B

lifting it the same distance in a shorter time

C

lifting it a greater distance in the same time

D

lifting it a shorter distance in a longer time

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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