ELECTROMAGNETISM
2 marks · NormalState two ways to increase the strength of the magnetic field produced by a current-carrying wire.
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Increase the current in the wire; wrap the wire into a coil (solenoid).
Also accept: Increase current; use a coil; add more turns; use a soft iron core
Common mistakes: Stating unrelated ways (e.g., use a bigger magnet)
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Marking points
B1 · 1 mark · States increase the current.
B2 · 1 mark · States wrap the wire into a coil or add a soft iron core.
Worked solution
Increase the current in the wire, or wrap the wire into a coil.