Current Loop as a Magnetic Dipole: Magnetic Dipole Moment of Current Loop

In a hydrogen atom, an electron carrying charge 'e' revolves in an orbit of radius 'r' with speed 'v'. Obtain an expression for the magnitude of magnetic moment of a revolving electron.

If magnetic susceptibility of a certain magnetic material is 0 0001, find its relative permeability.

A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current carrying coil in the shape of,

1. an equilateral triangle of side ‘a’.
2. a square of side ‘a’.

The magnetic dipole moments of the coil in each case respectively are:

Define Curie temperature.

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m. If this square loop is changed to a circular loop and it carries the same current, the magnitude of the magnetic dipole moment of circular loop will be:

The Earth's magnetic field at the Equator is approximately 0.4 G. Estimate the Earth's magnetic dipole moment. Given : Radius of the Earth = 6400 km.

A triangular loop of wire placed at abc is moved completely inside a magnetic field which is directed normal to the plane of the loop away from the reader to a new position a'b'c'. What is the direction of the current induced in the loop? Give reason.

A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current carrying coil in the shape of,

1. an equilateral triangle of side ‘a’.
2. a square of side ‘a’.

The magnetic dipole moments of the coil in each case respectively are :