Question

A current I flows along the length of an infinitely long, thin walled pipe. Then what will be the magnetic field at a point inside the pipe.

Solution

Given,
Current I is flowing along the length of an infinitely long, thin walled pipe.

According to Ampere's circuital law,
$\int B . d l = μ_{o} I$
Since, no current exists in the medium, inside the pipe,
I=0 $∴$ B = 0.
Hence, the magnetic field at a point inside the pipe = 0

Some More Questions From Moving Charges And Magnetism Chapter

Two moving coil meters, M₁ and M₂ have the following particulars:
R₁ = 10 Ω N₁ = 30,
A₁ = 3.6 x 10^–3 m², B₁ = 0.25 T
R₂ = 14 Ω; N₂ = 42,
A₂ = 1.8 x 10^–3 m², B₂ = 0.50 T
(The spring constants k are identical for the two meters).
Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M₂ and M_1.

For Daily Free Study Material Join wiredfaculty

Moving Charges And Magnetism

A current I flows along the length of an infinitely long, thin walled pipe. Then what will be the magnetic field at a point inside the pipe.

Some More Questions From Moving Charges And Magnetism Chapter

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Location