Physics for IGCSE & O level - Magnets And Currents (Section 4 - No. 26)
What are the key features of the magnetic field around a wire carrying a current?
The magnetic field lines are circular.
The magnetic field lines are parallel.
The field lines start from the wire and move outwards.
The field is stronger the farther from the wire
Explanation
The magnetic field around a wire carrying a current is circular.
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