Home
Class 12
PHYSICS
A conducting ring of radius r having cha...

A conducting ring of radius r having charge q is rotating with angular velocity `omega` about its axes. Find the magnetic field at the centre of the ring.

A

`(mu_0q omega)/(2pi R)`

B

`(mu_0q omega)/(pi R)`

C

`(mu_0q omega)/(4pi R)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A non-conducting disc having unifrom positive charge Q , is rotating about its axis with unifrom angular velocity omega .The magnetic field at the centre of the disc is.

A conducting disc of radius r rotaes with a small but constant angular velocity omega about its axis. A uniform magnetic field B exists parallel to the axis of rotation. Find the motional emf between the centre and the periphery of the disc.

A ring of mass m and radius R is given a charge q. It is then rotated about its axis with angular velocity omega .Find (ii) Magnetic field produced at the centre of ring.

There is a ring of radius r having linear charge density lambda and rotating with a uniform angular velocity omega. the magnetic field produced by this ring at its own centre would be

A conducting ring of radius 'r' is rolling without slipping with a constant angular velocity omega (figure). If the magnetic field strengh is B and is directed into the page the emf induced across PQ is

A thin uniform ring of radius R carrying charge q and mass m rotates about its axis with angular velocity omega . Find the ratio of its magnetic moment and angular momentum.

A conducting circular loop of radius r is rotated about its diameter at a constant angular velocity omega in a magnetic field B perpendicular to the axis of rotation. In what position of the loop is the induced emf zero?

Consider two uniformaly charged concentric and coaxial rings of radii R and 2R. Total charge on inner ring is Q_(1) and that on outer ring is Q_(2) . Both rings are revolving in same sence with same angular velocity about its axis. If net magnetic induction at a distance R feom the centre of the rings, on axis of rings is zero then (Q_(1))/(Q_(2)) is :

A uniformly charged disc of radius r and having charge q rotates with constant angular velocity omega . The magnetic dipole moment of this disc is (1)/(n)qomegar^(2) . Find the value of n.

A conducting rod OA of length l is rotated about its end O with an angular velocity omega in a uniform magnetic field directed perpendicualr to the rotation. Find the emf induced in the rod, between it's ends.