A thin circular ring of area A is held perpendicular to a uniform magnetic field of induction B. A small cut is made in the ring and a galvanometer is connected across the ends such that the total resistance of the circuit is R. When the ring is suddenly squeezed to zero area, the charge flowing through the galvanometer is

A thin circular ring of area A is held perpendicular to a uniform field of induction B. A small cut is made in the ring and a galvanometer is connected across the ends such that the total resistance of the circuit is R. When the ring is suddenly squeezed to zero area, the charge flowing through the galvanometer is _____

A thin circular ring of area A is perpendicular to uniform magnetic field of induction B . A small cut is made in the ring and a galavanometer is connected across the ends such that the total resistance of circuit is R . When the ring is suddenly sqeezed to zero area, the charge flowing through galvanometer is:

Metal ring of radius R is placed perpendicular to uniform magnetic field B. Magnetic field starts changing at a rate alpha

A coil of 30 turns of wire each of 10 cm^(2) area is placed with its plance perpendicular to a magnetic field of 0.1 T . When the coil is suddenly withdraw from the field, a galvanometer connected in series with the coil indicated that a 10 mu C charge passes around the circuit. The combined resistance of the coil and galvanometer is

A thin semicircular conducting ring of radius R is falling with its plane verticle in a horizontal magnetic inducting B . At the position MNQ , the speed of the ring is V and the potential difference developed across the ring is

The area of a coil changes from A to (A+dA) in dt sec in a uniform magnetic field of induction vecB . If R is the resistance of the coil, the charge flowing through the coil is

A metal rod of mass m can rotate about a horizontal axis O , sliding along a circular conductor of radius a (fig). The arrangment is located in a unifrom magnetic field of induction B directed perpendicular to the ring plane. The axis and the ring are connected to an emf source to form a circuit of resistance R . Neglecting the friction, circuit induction and ring resistance, find the law according to which the source and must very to make the rod rotate with a constant angular velocity omega .

Winding wire with insulated coating is used to make a circular ring whose area is A. This ring is kept perpendicular to a uniform magnetic field B. If ring is suddenly squeezed to zero area then how much charge will flow through the wire? R is resistance of winding wire.