EASY
AS and A Level
IMPORTANT
Earn 100

Can you describe how to plot a magnetic field using a compass and iron filings.

Important Questions on Magnetic Fields and Electromagnetism

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>BEFORE YOU START>Q ●
What effect do like poles and unlike poles have on each other?
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>BEFORE YOU START>Q ●
Write down definitions for gravitational field and an electric field. Swap your definitions with a partner.
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>BEFORE YOU START>Q ●
With your partner, discuss how charge and current are related.
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>Questions>Q 1
Sketch the magnetic field pattern around a long straight wire carrying an electric current. Now, alongside this first sketch, draw a second sketch to show the field pattern if the current flowing is doubled and its direction reversed. How does the pattern show that the field is stronger nearer the wire?
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>Questions>Q 2

Sketch the diagram in Figure, and label the north and south poles of the electromagnet. Show on your sketch the direction of the magnetic field (as shown by the needle of a plotting compass) at each of the positions A, B, C and D.

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A current-carrying solenoid.

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>Questions>Q 3

State which of the pairs of electromagnets shown in Figure attract one another, and which one repel.

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EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>Questions>Q 3

State which of the pairs of electromagnets shown in Figure attract one another, and which one repel.

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EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 24 - Magnetic Fields and Electromagnetism>Question>Q 4

Figure shows three examples of current-carrying conductors in magnetic fields. For each example, decide whether there will be a magnetic force on the conductor. If there is a force, in what direction will it act? Note the cross in the circle shows the current is into the plane of the paper, as in Figure.

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The magnetic field pattern around a current carrying wire. The diagram also shows the convention used to indicate the direction of current.

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