A closed coil having 50turns, area `300cm^(2)` and resitance `40Omega` is h eld at right angles to uniform field of induction 0.02T. If it is then turned through an angle of `30^(@)` about an axis at right angles to the field, find the charge flown through the coil.

A flat circular coil of n turns, area A and resitance R is placed in a uniform magnetic field B . The pane of coil is initially perpedicular of B . when the coil is rotated through an angle of 180^@ about one of its diameter, a charge Q_1 flows through the coil When the same coil after charge Q_2 flows through it. then Q_2//Q_1 is

A metal rod of length 0.5 m rotates at a uniform angular speed about one of its ends in a plane at right angle to a uniform magnetic field of induction 10^(-5)T . If it turns through an angle of 60^(@) ini 0.1 s. then the emf induced between its ends will be

A coil of radius 2 cm and 500 turns, carries of a current of 2A. It is placed in a uniform magnetic field of induction 0.5T. What is the torque acting on the coil if theta=30◦ ?

A coil of area 100 cm^(2) having 50turns is perpendicular to a magnetic field of intensity 0.02T. The resistance of the coil is 2Omega . If t is removed from magnetic field in is the charge flown through the coil is:

A closed coil consists of 500 turns has area 4 cm^2 and a resistance of 50 Omega . The coil is kept with its plane perpendicular to a uniform magnetic field of 0.2 Wb/m^2 . Calculate the amount charge flowing through the coil if it is rotated through 180^@

A suspended, vertical, circular coil of 50 turns and area 100cm^(2) carrying a current of 30 mA, is in equilibrium in a uniform magnetic field of intensity 0.4 tesla, when the normal to the plane of the coil makes an angle of 30^(@) with the field. Calcualte the torque on the coil due to the current.

A closed coil having 50 turns, area 300cm^(2) , is rotated from a position where it plane makes an angle of 45^(@) with a magnetic field of flux density 2.0T to a position perpendlcular to the field in a time of 0.1s. What is the average EMF induced in the coil ?