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8 Energy – forces doing work

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Question 91
H

A rechargeable battery powers a motor that lifts a load at constant speed. The battery, motor, load, Earth and surrounding air form a closed system. Which combination correctly describes this process?

[1]
A

Mechanical transfer to motor; electrical transfer to load; total energy unchanged

B

Mechanical transfer to motor; electrical transfer to load; total energy decreases

C

Electrical transfer to motor; mechanical transfer to load; total energy unchanged

D

Electrical transfer to motor; mechanical transfer to load; total energy decreases

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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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