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Magnetism and current for Edexcel GCSE Physics
This page covers the following topics:
1. Magnetic field created by current
2. Strength of magnetic fields
When a current flows through a wire, a magnetic field is produced around the wire.
The magnetic field produced around a current carrying wire varies in strength depending on the position relative to the wire and the speed of the current in the wire.
1
The magnetic field lines travel around the wire in circles. Is this statement true?
yes
2
Are the magnetic field lines movements parallel or perpendicular to the wire?
perpendicular
3
Which hand is used for the rule that allows us to see which direction the magnetic field travels in?
right-hand
4
If the direction of the current is reversed, what effect does this have on the magnetic field?
The magnetic field direction is reversed.
5
Does the magnetic field get stronger or weaker as you move away from the wire?
weaker
End of page