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A steady electric current is flowing thr...

A steady electric current is flowing through a cylindrical conductor. Then,

A

the electric field at the axis of the conductor is zero

B

the magnetic field at the axis of the conductor is zero

C

the electric field in the vicinity of the conductor is zero

D

the magnetic field in the vicinity of the conductor is zero

Text Solution

Verified by Experts

The correct Answer is:
B, C
(b,c): If a current passes through any conductor, net charge through
any section is zero. Hence, electric field in the vicinity of the
conductor is zero. We can observe using Biot and Savitru law that
the magnetic field at the axis of the cylinderical wire will be zero.
Electric field at the axis of the wire cannot be zero otherwise the
current through the wire cannot flow.
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