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Cambridge IGCSE Physics practice

Paper 3 structured question: Electrical safety

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3

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1

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Electrical safety

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Paper 3Theory (Core)1 marks

Safety features in electrical appliances.

Description

Electrical Safety

In double-insulated appliances, the absence of an earth wire means that the fuse is the primary safety feature.

  1. a

    State why double-insulated appliances do not require an earth wire.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Electrical safety

Paper 3Theory (Core)1 marks

Description

Double-Insulated Appliances

Double-insulated appliances are designed without an earth wire. They rely on a fuse for protection against electrical faults.

  1. a

    State the role of a fuse in a double-insulated appliance.

    Aim for approximately 1 distinct marking point.

    [1]