If the solenoid is free to tum about the vertical direction and a uniform hortzontal magnetic field of 0.25 T is applied, what is the magnitude of torque on the solenoid when its axis makes an angle of `30^@` with the direction of applied field? (Here M=0.6J/T)

A magnet of length 12 cm has pole strength 10 units. Find out the torque acting on the magnet when it is placed at an angle of 30^@ with the direction of a uniform field of strength 0.5 oersted.

What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of 30^@ with the direction of a uniform magnetic field of 0.15 T?

A conductor of length 3m moving in a uniform magnetic field of strength 100 T. It covers a distance of 70 m in 5 sec. Its plane of motion makes an angle of 30^(@) with direction of magnetic field. Calculate the emf induced in it.

A bar magnet of magnetic moment 1.5 JT^(-1) lies aligned with the direction of a uniform magnetic field of 0.22 T. (a) What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment: (i) normal to the field direction (ii) opposite to the field direction? (b) What is the torque on the magnet in cases (i) and (ii)?

A conductor of length 10 cm carrying 2.5 A current is placed in a magnetic field of 0.5 T. Calculate the maximum and minimum forces on the conductor. What is the force on the conductor when it is placed at 45^(@) to the direction of field?

A solenoid of length 0.5 m has a radius of 1 cm and is made up of 500 turns. It carries a current of 5 A. What is the magnitude of the magnetic field inside the solenoid?

A bar of diamagnetic substance is placed in a magnetic field with its length making angle 30^@ with the direction of the magnetic field, the bar behaviour is given by the statement ?