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If a current in a wire is flowing perpendicular to a magnetic field, the Hall effect is observed. This effect is caused by the forces from magnetic fields pushing the electrons to one side of the wire. So, does it increase the resistance of the wire, as there is now less area for the current to flow through due to one side of the wire being occupied by these (assumed to be) immobile electrons?

kbakshi314
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Zhao
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1 Answers1

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The effect is transient. The magnetic force causes electrical polarisation. In the stationary state the magnetic force is compensated by the electric field due to this polarisation. This very small gradient in charge density does not influence conductivity.

my2cts
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