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Cambridge IGCSE Physics practice

Paper 3 structured question: Electrical energy and electrical power

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3

Paper

2

Marks

Topic

Electrical energy and electrical power

Exam-style question

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Paper 3Theory (Core)2 marks

Understanding energy consumption in a device.

Description

Energy Consumption

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

  1. a

    State the electrical energy consumed by the device.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Electrical energy and electrical power

Paper 3Theory (Core)1 marks

Description

Electrical Energy Calculation

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

  1. a

    State the formula used to calculate electrical energy.

    Aim for approximately 1 distinct marking point.

    [1]