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Cambridge IGCSE Physics practice

Paper 3 structured question: The transformer

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Attempt questionThe transformer revisionRevise the key idea

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The transformer

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Paper 3Theory (Core)4 marks

Explaining the construction of a transformer.

Description

Transformer Construction

A transformer is built with a primary coil, a secondary coil, and a soft-iron core. The primary coil receives alternating current, which creates a magnetic field that induces voltage in the secondary coil.

  1. a

    Describe how a transformer works, including the role of the core.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 3 structured question: The transformer

Paper 3Theory (Core)1 marks

Description

Transformer Components

A transformer consists of two coils of wire and a core material. The primary coil is connected to an AC source, while the secondary coil delivers the output voltage. The core is made of soft iron to improve efficiency.

  1. a

    State the purpose of a transformer.

    Aim for approximately 1 distinct marking point.

    [1]