Question

If a long hollow copper pipe carries a direct
current, the magnetic field associated with the
current will be
(a) only inside the pipe
(b) only outside the pipe
(c) neither inside nor outside the pipe
(d) both inside and outside the pipe

Answer 1

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(b) only outside the pipe

If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be. As the current inside the pipe is zero. Therefore the magnetic field associated with the current will be only outside the pipe.

Answer 2

Answer:

(b) only outside the pipe

If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be. As the current inside the pipe is zero. Therefore the magnetic field associated with the current will be only outside the pipe.

Explanation:

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