A metal ring of radius `r =0.5m` with its plane noraml a unifrom magnetic field `B` of induction `0.2T` carries a current `I=100A` The tension in newtons develoed in the ring is

A metal ring of radius r =0.5m with its plane normal a unifrom magnetic field B of induction 0.2T carries a current I=100A The tension in newtons developed in the ring is

A supercondutig round ring of radius a and inductance L was located in a unifrom magnetic fied of induction B . The ring plane was parallel to the vector B , and the current in the ring was equal to zero. Them the ring was turned through 90^(@) so that its plane became perpendicular to the feild. FInd: (a) the current induced in the ring after the turn, (b) the work perfromed during the turn.

A supereconducting round ring of radius a and inductance L was located in a uniform in a uniform magnetic field of induction B . The ring plane was parallel to the vector B and the current in the ring was equal to zero, then the ring was turned through 90^(@) so that its plane became perpendicular to the field. Find (a) the current induced in the ring after the turn (b) the work performed during the turn.

A ring radius a = 50 mm made of thin wire of radius b = 1.0 mm was located in a unifrom magnetic field with induction B = 0.50 mT so that the ring place was perpenficular to the vector B . Then the ring was cooled down to superconducting state, and the magnetic field was swichted off. Find the ring current after that. Note that the inductiance of a thin ring along which the surface current flows is equal to L = mu_(0)a (In (8a)/(b) - 2) .

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

A ring of mass (2pi)kg and of radius 0.25m is making 300rp m about an axis through its perpendicular to its plane. The tension in newton developed in ring is approximately

A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B. At the position MNQ shown in the fig, the speed of the ring is V. The potential difference developed across the semicircular ring is

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.