Home
Class 12
PHYSICS
An infinitesimal bar magnet of dipole mo...

An infinitesimal bar magnet of dipole moment `M` is pointing and moving with speed `v` in the `x`-direction. A closed circular conducting loop of radius a and negligible self-inductance lies in the `y-z` plane with its centre at `x=0` and its axis coinciding with `x`-axis. find the force opposing the motion of the magnet, if the resistance of the loop is `R` . Assume that the distance `x` of the magnet from the centre of the loop is much greater than a .

Text Solution

Verified by Experts

The correct Answer is:
`(9mu_(0)^(2)M^(2)a^(4)v)/(4Rx^(8))`
Promotional Banner

Similar Questions

Explore conceptually related problems

The dipole moment of a short bar magnet is 1.25 A-m^(2) . The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is

Find the magnetic moment of a thin round loop with current if the radius of the loop is equal to r and the magnetic induction at its centre is equal to X.

A circular loop of radius R , carrying I , lies in x- y plane with its origin . The total magnetic flux through x-y plane is

Considering magnetic field along the axis of a circular loop of radius R , at what distance from the centre of the loop is the field one eighth of its value at the centre ?

Circular coil of radius r ,having "n" turns is "kept along yz plane so that its axis coincide with x-axis.If current through it is i,then magnetic field induction at a point on axis is sqrt(3)r distance from the centre of the ring is

The magnetic field at a distance x on the axis of a circular coil of radius R is 1/8th of that at the centre. The value of x is