GCSEPhysicsOCR GatewayExam Questions4. Magnetism & Magnetic Fields4.2 Uses of Magnetism

Uses of Magnetism (OCR Gateway GCSE Physics)

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4.2 Uses of Magnetism

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4.2 Uses of Magnetism

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11 mark

Higher Tier Only

A student inserts a magnet into a coil of wire.

q8-paper3-oct-nov2020-ocr-gcse-physics

What is induced across the ends of the coil of wire?

  • Charge

  • Magnetism

  • Potential difference

  • Resistance

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21 mark

Higher Tier Only

A wire is placed between the poles of a magnet, perpendicular to the magnetic field lines.

q11-paper3-oct-nov2020-ocr-gcse-physics

Which direction will the wire move when a current flows?

  • Down

  • Left

  • Right

  • Up

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11 mark

Higher Tier Only

A student measures the magnetic flux density around a current-carrying conductor at increasing distances from the conductor.

She plots her results.

q4-1-paper3-specimen-ocr-gcse-physics

The current in the conductor is decreased and a new graph plotted.

Which is the correct graph?

q4-2-paper3-specimen-ocr-gcse-physics

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    21 mark

    Higher Tier Only

    The diagram shows two poles of a magnet.

    q10-paper3-specimen-ocr-gcse-physics

    X is the position of a wire carrying a current perpendicularly into the paper.

    Which direction does the wire move?

    • downwards arrow

    • rightwards arrow

    • leftwards arrow

    • upwards arrow

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    31 mark

    Higher Tier Only

    A 0.5 m length of wire is placed inside four different magnetic fields.

    Magnetic Field Force on wire (N) Current in wire (A)
    A 2.0 0.1
    B 2.0 0.2
    C 4.0 0.1
    D 4.0  0.4


    Which magnetic field has the greatest magnetic flux density?

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      41 mark

      Higher Tier Only

      This is a diagram of a transformer used in the national grid.

      q13-paper4-june2098-ocr-gcse-physics

      Why is this transformer used in the national grid?

      • To decrease the power in the national grid by a factor of 20.

      • To decrease the power loss in the national grid by a factor of 400.

      • To increase the power in the national grid by a factor of 20.

      • To increase the power loss in the national grid by a factor of 400.

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      51 mark

      Higher Tier Only

      Which of the following graphs shows the typical output potential difference, Vout, for a dynamo?

      q9-paper3-oct-nov2020-ocr-gcse-physics

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        11 mark

        Higher Tier Only

        A wire is placed inside a horseshoe magnet.

        q7-paper3-june2018-ocr-gcse-physics

        Which direction will the wire move when the switch is closed?

        • Downwards

        • Left

        • Right

        • Upwards

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        21 mark

        Higher Tier Only

        What output voltage does the transformer produce?

        q8-paper3-june2018-ocr-gcse-physics

        • 0.2 V

        • 0.4 V

        • 5 V

        • 10 V

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