A rectangular coil of area` vecA `and number of turns n is placed in a uniform magnetic field vecB. If the coil carries a current I, then the torque acting on the coil is given by

A coil carrying electric current is placed in uniform magnetic field

A circular coil of 20 turns and radius 10cm is placed in uniform magnetic field of 0.10T normal to the plane of the coil.If the current coil is 5A ,then the torque acting on the coil will be: ?

A rectangular loop carrying a current i is placed in a uniform magnetic field B. The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by

A current i flows in a circular coil of radius r . If the coil is placed in a uniform magnetic field B with its plane parallel to the field, magnitude of the torque that acts on the coil is

A rectangular coil of wire carrying a current is suspended in a uniform magnetic field. The plane of the coil is making an angle of 30^(@) with the direction of the field and the torque experienced by it is tau_(1) and when the plane of the coil is making an angle of 60^(@) with the direction of the field the torque experienced by it is tau_(2) . Then the ratio tau_(1):tau_(2) is