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A current flow along the length of an in...

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

A

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

B

the magnetic field an any point inside the pipe is zero

C

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

D

the magnetic field is different points inside the pipe

Text Solution

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The correct Answer is:
B
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