Current Carrying Loop Force Torque

A closed-loop carrying a current is placed in a uniform magnetic field. If the magnetic forces on segments and are respectively, and are in the plane of the paper and along the directions shown, then which of the following forces acts on the segment

1.

2.

3.

4.

A square current-carrying loop is suspended in a uniform magnetic field acting in the plane of the loop. If the force on one arm of the loop is , what will be the net force on the remaining three arms of the loop?

1.		2.
3.		4.

A current-carrying closed loop in the form of a right isosceles triangle is placed in a uniform magnetic field acting along with . If the magnetic force on the arm is then what is the force on the arm ?

1.		2.
3.		4.

A rectangular coil of length and width having turns of wire is suspended vertically in a uniform magnetic field of strength . The coil carries a current of . If the plane of the coil is inclined at an angle of with the direction of the field, the torque required to keep the coil in stable equilibrium will be:
1.
2.
3.
4.

A turn rectangular coil of length cm and width cm carries a current of and subjected to the magnetic field of strength . Work done for rotating the coil by against the torque is:
1.
2.
3.
4.

A uniform conducting wire of length and resistance ' ' is wound up as a current-carrying coil in the shape of;

(i)	an equilateral triangle of side ' '
(ii)	a square of side ' '

The magnetic dipole moments of the coil in each case respectively are:
1.
2.
3.
4.