A metalic ring is dropped down, keeping its plane perpendicular to a constant and horizontal magnetic field. The ring enters the region of mangetic fied at `t=0` and completely emerges out `t= Ts`. The current in the ring varies as:

A conducting ring is placed in a uniform magnetic field with its plane perpendicular to the field . An emf is induced in the ring if

A conducting ring is placed in a uniform magnetic field with its plane perpendicular to the field . An emf is induced in the ring if

A conducting light string is wound on the rim of a metal ring of radius r and mass m . The free end of the string is fixed to the ceiling. A vertical infinite smooth conducting plane is always tangent to the ring as shown in the figure. A uniform magnetic field Bis applied perpendicular to the plane of the ring. The ring is always inside the magnetic field. The plane and the strip are connected by a resistance R . When the ring is released, find a. the curent in the resistance R as as function of time. b. the terminal velocity of the ring.

A conducting light string is wound on the rim of a metal ring of radius r and mass m . The free end of the string is fixed to the ceiling. A vertical infinite smooth conducting plane is always tangent to the ring as shown in the figure. A uniform magnetic field Bis applied perpendicular to the plane of the ring. The ring is always inside the magnetic field. The plane and the strip are connected by a resistance R . When the ring is released, find a. the curent in the resistance R as as function of time. b. the terminal velocity of the ring.

A metallic ring of area 25 cm^(2) is placed perpendicular to a magnetic field of 0.2 T .Its is removed from the field in 0.2 s .Find the average emf produced in the ring during this time.

A metallic ring of area 25 cm^(2) is placed perpendicular to a magnetic field of 0.2 T .Its is removed from the field in 0.2 s .Find the average emf produced in the ring during this time.

A conducting ring of mass 2 kg and radius 0.5 m is placed on a smooth horizontal plane. The ring carries a current . A horizontal magnetic field B = 10T is switched on at time t = 0 as shown in figure. The initial angular acceleration of the ring will be: