The potential enargy of bar magnet of magnetic moment `8 Am ^(2)` placed in a uniform magnetic field of 2 T at an angle of `120^(@)` is equal to

A bar magnet of magnetic moment 5Am^(2) is suspended in a uniform magnetic field of strength "2T" making an angle 60^(0) with the direction of the field.The potential energy of the magnet in that position is (A) 5J (B) -5J (C) 10J (D) -10J

A bar magnet of magnetic moment 0.4 Am^(2) is placed in a uniform magnetic field of induction 5 xx10^(-2) tesla. What is the torque acting on the magnet if the angle between the magnetic induction and the magnetic moment is 30^(@) .

A short bar magnet of magnetic moment m=0.32 JT^(-1) is placed in a uniform magnetic field of 0.15 T. If the bar is free to rotate in the place of the field , which orientation would correspond to its (a) stable , and (b) unstable equilibrium ? What is the potential energy of the magnet in each case ?

A bar magnet of magnetic moment 0.4 Am^(2) is placed in a uniform magnetic field of induction 5 xx10^(-2) tesla. The angle between the magnetic induction and the magnetic moment is 30^(@) . The torque acting on the magnet is

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 ?

The magnetic moment of a a small bar magnet is 0.9a.m^(2) If it is placed in a uniform magnetic field making an angle of 30^(@) It , a torque of 0.063N.m Acts on it. What is the magnetic field ?