Magnetic Field of Hollow Cylinder – Rankers Physics

Ampere's Circuital Law: Practice Problem & Solution

For the hollow thin cylindrical current carrying straight pipe which statement is correct:
Magnetic field inside the pipe is not zero.
Magnetic field outside the pipe is zero.
Electric field outside the pipe is zero.
Electric field on the surface of pipe is zero.

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Ampere's Circuital Law. Understanding the underlying formula is key to arriving at the correct answer below:

Inside the hollow pipe, the magnetic field is zero according to Ampere's law. Since a current-carrying pipe is electrically neutral, the electric field outside the pipe is zero.

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