Home Physics Moving Charge and Magnetism Telangana & AP CET Previous Year Question A current i flows in an infinitely long, str…
Physics Moving Charge and Magnetism Telangana & AP CET Previous Year Question MCQ (Single Correct)

A current i flows in an infinitely long, straight and thin walled pipe, then

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

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Text Solution

Verified by Experts
The correct answer is:
B

From the ampere law

The current enclosed inside it is zero, the magnetic field will be equal to zero.

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