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A current flows along the length of an i...

A current flows along the length of an infinitely long, straight, thin walled pipe. Then

A

the magnetic field is zero only on the axis of the pipe.

B

the magnetic field is different at different poins inside the pipe.

C

the magnetic field at any point inside the pipe is zero

D

the magnetic field at all the point inside the pipe is same, but not zero.

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