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3.1 Static and charge

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Question 2
F

A battery-powered toy car has an electric motor.

The current in the motor is 250 mA.

a.

Write down the equation that links charge flow, current and time.

[1]
b.

Calculate the charge that flows through the motor in 4.0 minutes.

[3]
c.

The batteries can make 1800 C of charge flow before they go flat.

Calculate how long the toy car can run before the batteries go flat.

Give your answer in minutes.

[3]
Markscheme

3.1 Static and charge Questions

  1. GCSE
  2. /Physics
  3. /3.1 Static and charge

43 exam-style questions on OCR GCSE Physics 3.1 Static and charge, covering 3.1.1 Positive and negative charge, 3.1.2 Static electricity and forces between charged objects, 3.1.3 Electron transfer and static electricity, 3.1.4 Electric fields, 3.1.5 Current as a flow of charge, 3.1.6 Current in a single closed loop, and 3.1.7 Charge, current and time. Each one has a worked solution and a mark scheme showing where the marks go.

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