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Cambridge IGCSE Physics practice

Paper 3 structured question: The transformer

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The transformer

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Paper 3Theory (Core)1 marks

A transformer is used to step down voltage from 240 V to 120 V.

Description

Transformer Voltage Levels

The primary coil has 100 turns and the secondary coil has 50 turns.

  1. a

    State the turns ratio of the transformer.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: The transformer

Paper 3Theory (Core)2 marks

Description

Transformer Operation

The primary coil has 100 turns and the secondary coil has 50 turns.

  1. a

    State the relationship between the primary and secondary voltages and the number of turns.

    Aim for approximately 2 distinct marking points.

    [2]