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10.1 Circuits, charge and current

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Question 3

An automatic river-level sensor operates in a repeating 10.0 s cycle.

StageCurrentDuration in each cycle
measuring35 mA0.80 s
transmitting120 mA0.20 s
standby2.0 mA9.0 s

The sensor operates for 15.0 min.

Calculate the total charge that passes through the sensor during the 15.0 min.

[4]
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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