Q. A current $I$ 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 points inside the pipe
C) The magnetic field at any point inside the pipe is zero
D) The magnetic field at all points inside the pipe is the same, but not zero
Explanation
(c) Using Ampere’s circuital law the magnetic field at any point inside the pipe is zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.