Home
Class 12
PHYSICS
Consider a long solenoid of n terms per ...

Consider a long solenoid of n terms per unit length and carrying a current J. The magnetic field in the interior of the solenoid is given by

A

`B_0=mu_0I`

B

`B_0=-mu_0I`

C

`B_0=mu_0nI`

D

`B_0=-mu_0nI`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A long solenoid of 50 cm length having 100 turns carries a current of 2.5A. The magnetic field at centre of solenoid is:

A long solenoid has 200 turns per cm and carries a current of 2.5A. The magnetic field at its centre is

A long solenoid has n turns per metre and current IA is flowing through it. The magnetic field induciton at the ends of the solenoid is

Find the magnetic intensity H at the centre of a long solenoid having n turns per unit length and carrying a current i (a) when no material is kept in it and (b) when a long copper rod is inserted in the solenoid.

A solenoid of length 0*20m , having 120 turns carries a current of 2*5A . Find the magnetic field: (a) in the interior of the solenoid, (b) at one end of the solenoid. Given mu_0=4pixx10^-7 S.I. units.

A solenoid of length 50cm , having 100 turns carries a current of 2*5A . Find the magnetic field, (a) in the interior of the solenoid, (b) at one end of the solenoid. Given mu_0=4pixx10^-7WbA^-1m^-1 .

The magnetic field (B) inside a long solenoid having n turns per unit length and carrying current / when iron core is kept in it is (mu_o = permeability of vacuum, chi = magnetic susceptibility)

A tightly- wound, long solenoid is kept with its axis parallel to a large metal sheet carrying a surface current. The surgace current through a width dl of the sheet is Kdl and the number of turns per unit length of the solenoid is n. The magnetic field near the centre of the solenoid is found to be zero. (a) find the current in the solenoid. (b) If the solenoid is rotated to make its axis perpendicular to the metal sheet, what would be the magnitude of the magnetic field near its centre?