A battery is connected to a motor.
A voltmeter connected across the motor reads 6.0 V.
Explain what a reading of 6.0 V means in terms of energy and charge.
In one minute, 45 C of charge passes through the motor.
State the equation linking energy transferred, charge moved and potential difference.
Calculate the energy transferred by the motor in one minute.
The battery is replaced by a battery with a greater potential difference.
The same charge passes through the motor in one minute.
Explain how this affects the energy transferred by the motor.
A student says:
'One volt is the same as one joule per coulomb.'
Explain why the student is correct.
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.