Two normal uniform magnetic field contain a magnetic needle making an angle `60^(@)` with F. Then the ratio of `F/H` is

A magnet suspended in a uniform magnetic field of induction 0.2" Wb/m"^(2) , makes an angle of 60^(@) with the normal to the direction of the field. What is the magnetic moment of the magnet, if a torque of moment 15xx10^(-2) Nm acts on it?

A bar magnet is placed in a uniform magnetic field with its magnetic moment making an angle theta with the field. Write expressions for torque on the bar magnet and potential energy of magnet in this orientation. When it this energy minimum?

A bar magnet of length 0.1 m and with a magnetic moment of 5Am^(2) is placed in a uniform a magnetic field of intensity 0.4T, with its axis making an angle of 60^(@) with the field. What is the torque on the magnet ?

A magnetic needle is placed in a uniform magnetic field and is aligned with the field. The needle is now rotated by an angle of 60^(@) and the work done is W. The torque on the magnetic needle at this position is

A rectangular coil carrying current is placed in a uniform magnetic field in such a way that normal to the coil makes an angle theta with the direction of magnetic flux density. Find the magnitude of torque acting on the coil Define magnetic moment of a current loop.

If a magnet is suspended at an angle 30^(@) to the magnetic meridian and in this plane the dip needle makes an angle of 60^(@) with the horizontal. The true value of dip is: