Cambridge IGCSE Physics practice

Paper 3 structured question: Electrical energy and electrical power

Try the question first, then check the answer and practise the same topic again.

At a glance

Paper

Marks

Topic

Electrical energy and electrical power

Exam-style question

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Paper 3Theory (Core)1 marks

Calculating electrical energy in a circuit.

Description

A circuit has a voltage of 9 volts and a current of 2 amperes. The circuit operates for 10 seconds.

a
State the formula used to calculate electrical energy.
Your answer
Aim for approximately 1 distinct marking point.
[1]

0 of 1 part answered

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Paper 3Theory (Core)2 marks

Description

A device uses 5 amperes of current at a voltage of 20 volts for 15 seconds.

a
State the electrical energy consumed by the device.
Your answer
Aim for approximately 2 distinct marking points.
[2]