A circular brass loop of radius a and resistance R is placed with its plane perpendicular to the magnetic field which varies with time as `B=B_0 sin omegat`. Obtain an expression for the induced current in the loop.

A circular loop of radius R carrying a current is placed in a uniform magnetic field with its plane perpendicular to B. The force on the loop is

A circular loop of radius R, carrying current I, lies n XY-plane with its centre at origin. The total magnetic flux through XY-plane is

An irregular shaped with PQRS placed in uniform magnetic filed perpendicular to the plane of the paper changes into a circular shape. State, which reason, the direction of the induced current iin the loop.

A circular loop of radius R, carrying current I, lies in x-y plane with its center at origin. The total magnetic flux through x-y plane?

An irregular shaped wire PQRS shown in the figure. placed in a uniform magnetic field perpendicular to the plane of the paper changes into a circular shape. Show with reason the direction of the induced current in the loop.

A circular coil of N turns and radius R is kept normal to the magnetic field given by B = B_0 cos omegat . Deduce an expression for e.m.f. induced in the coil. State the rule which helps to detect the direction of induced current.

Current loop does not tend to rotate when its plane is bot to the direction of magnetic field. Why?

A conducting square loop of side L and resistance R moves in its plane with a unifrom velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists every where. the current induced in the loop is

A conducting circular loop is placed in a uniform magnetic field, B=0.025T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1 mms^(-1) . The induced emf when the radius is 2 cm is

A circular loop of area 0.01 m^(2) carrying a current of 10 A, is held perpendicular to a magnetic field of intensity 0.1 T. The torque acting on the loop is