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Magnetic Field Due to a Straight Current Carrying Conductor

A long straig...

Question

A long straight wire of radius R carries a current distributed uniformly over its cross-section. The magnitude of the magnetic field is

A

maximum at the axis of the wire

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B

minimum at the axis of the wire

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C

maximum at the surface of the wire

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D

minimum at the surface of the wire

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Solution

The correct options are
A maximum at the surface of the wire
C minimum at the axis of the wire
For a current carrying long straight wire, if the current distributed uniformly over its cross-section then the magnitude of the magnetic field is minimum at the axis of the wire maximum at the surface of the wire.

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