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Magnetism

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Question 1

This question is about magnetic fields.

a.

Which diagram shows the correct magnetic field pattern between the south poles of two bar magnets?

Four diagrams labeled A, B, C, and D, each showing two parallel bar magnet pole faces labeled 'S' (top) and 'S' (bottom). Diagram A shows nine vertical parallel field lines running straight from the top S pole to the bottom S pole, with arrows pointing downwards. Diagram B shows nine vertical parallel field lines running straight from the bottom S pole to the top S pole, with arrows pointing upwards. Diagram C shows several curved lines bending away from each other, leaving a gap in the center between the two poles, with arrows on all these lines pointing inwards towards the S poles. Diagram D shows several curved lines bending away from each other, leaving a gap in the center between the two poles, with arrows on all these lines pointing outwards away from the S poles.

[1]
b.

A student is asked to represent a uniform magnetic field between two magnetic pole pieces.

State three geometric features that the drawn magnetic field lines must have to show that the magnetic field is uniform.

[3]
c.

Describe how the drawing should be updated to represent a stronger uniform magnetic field.

[1]

Magnetism Questions

  1. IGCSE
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  3. /Magnetism