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8.1 Energy transfers and work

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Question 6

A Sankey diagram is drawn for a small electric motor lifting a load. It has one input arrow and two output branches.

The branch for energy transferred to the gravitational potential energy store of the load and Earth is 6 mm wide and represents 90 J. The second output branch is 14 mm wide.

What energy is represented by the input arrow?

[1]
A

210 J210\ \mathrm{J}210 J

B

90 J90\ \mathrm{J}90 J

C

1800 J1800\ \mathrm{J}1800 J

D

300 J300\ \mathrm{J}300 J

Markscheme

8.1 Energy transfers and work Questions

  1. GCSE
  2. /Physics
  3. /8.1 Energy transfers and work

115 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work, covering 8.1.1 Energy stores and transfer diagrams, 8.1.2 Ways of changing a system's energy, and 8.1.3 Work done by forces. Each one has a worked solution and a mark scheme showing where the marks go.

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