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10.1 Circuits, charge and current

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Question 23

A camping fan is powered by a battery with a potential difference of 12 V. It is used on each of the following speed settings.

Speed settingCurrent in the fanTime on setting
Low1.2 A20 min
High2.0 A15 min

After these two periods of use, the battery has 25.2 kJ of energy available. The fan then runs on its eco setting, at a current of 0.50 A, until this energy has been transferred.

a.

Calculate the total charge that flows through the fan during the two speed settings.

[4]
b.

Calculate the time for which the fan runs on its eco setting.

[3]
Markscheme

10.1 Circuits, charge and current Questions

  1. GCSE
  2. /Physics
  3. /10.1 Circuits, charge and current

94 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current, covering 10.1.1 Structure of the atom, 10.1.2 Circuit diagrams and symbols, 10.1.3 Series and parallel circuits, 10.1.4 Potential difference and voltmeters, 10.1.5 Energy transferred, charge and potential difference, and 10.1.6 Current, ammeters and charge flow. Each one has a worked solution and a mark scheme showing where the marks go.

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