GCSEPhysicsOCR GatewayTopic Questions4. Magnetism & Magnetic Fields4.1 Magnets & Magnetic Fields

Magnets & Magnetic Fields (OCR Gateway GCSE Physics)

Topic Questions

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1a3 marks

Draw the magnetic field pattern between the North and South poles of the magnets.

Include arrows on your field lines.

q20a-paper1-june2098-ocr-gcse-physics

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1b1 mark

Describe one difference between a permanent magnet and an induced magnet.

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1c2 marks

A student investigates solenoids and writes the following:

Solenoids

Solenoids are coils of wire.

When a voltage flows through them a magnetic field is created.

The magnetic field can be increased by decreasing the number of turns or by increasing the current.


The student makes two mistakes.
Put a circle enclose ringaround the two mistakes in the above box.

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2a5 marks

A student sets up an experiment to investigate the magnetic field around a current-carrying wire.

q17-paper3-june2018-ocr-gcse-physics

i)
Describe how the student could use this experiment and a compass to investigate the magnetic field produced by the wire.

[3]

ii)
Draw the shape of the field which would be found around this wire.

[2]

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2b2 marks

The behaviour of a magnetic compass is evidence that the core of the Earth is magnetic.

                                             
Explain why.

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3a5 marks

Two students, A and B, use different methods to see magnetic field patterns.

i)
Describe how student A could use a compass to plot a magnetic field pattern.

You may draw a diagram to help you answer this question.

[3]

ii)
Describe how student B could use iron filings to show a magnetic field pattern.

You may draw a diagram to help you answer this question.
[2]

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3b1 mark

Their teacher prefers the method used by student A.

Suggest one reason why.

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3c2 marks

Sketch the field pattern the students would find around a bar magnet.

Your sketch should show the direction of the field pattern.

q17c-paper1-specimen-ocr-gcse-physics

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3d2 marks

The two students investigate the magnetic effect of a current-carrying wire.

Look at the graph of their results.

q17d-paper1-specimen-ocr-gcse-physicsWhat trend is shown by the graph?

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