A rectanguar frame of wire abcd has dimensions 32cm X 8.0 cm and a total resistance of `2.0 Omega. It is pulled out of a magentic field B = 0.020 T by applying a force of `3.2 X 10^(-5)` N . It is found that the frame moves with constant speed. Find (a) this constant speed, (b) the emf induced in the loop, (c) the potential difference between the points c and d.

A square frame of wire abcd of side 1 m has a total resistance of 4 Omega .It is pulled out of a magnetic field B=1 T by applying a force of 1 N (figure).It is found that the frame moves with constant speed.Find (a)this constant speed. (b)the emf induced in the loop, (c) the potential difference between the points a and b and (d)the potential difference between the points c and d .

A square frame of wire abcd of side 1 m has a total resistance of 4 Omega .It is pulled out of a magnetic field B=1 T by applying a force of 1 N (figure).It is found that the frame moves with constant speed.Find (a)this constant speed. (b)the emf induced in the loop, (c) the potential difference between the points a and b and (d)the potential difference between the points c and d .

A rectangular frame of wire abcd has dimensions 1mxx 0.5m and a total resistance of 30Omega . It is pulled out of a magnetic field B=2T by applying a force of 1N . It is found that the frame moves with constant speed. (i) The constant speed is 30m//sec (ii) The emf induced in loop is 30 volt (iii) The p.d. between a and b is 25V (iv) The p.d. between c and d is 5V .

A square loop of side 20 cm and resistance 0.30 Omega is placed in a magnetic field of 0.4 T. The magnetic field is at an angle of 45^(@) to the plane of loop. If the magnetic field is reduced to zero in 0.5 s, then find the induced emf and induced current in the loop in this time interval.

A conducting circular loop is placed is a uniform magnetic field B =0.20 T with its plane perpendicualr to the field . Somehow, the radius of the loop starts shrinking at a constant rate of 1.0 mm s^(-1). Find the induced emf in the loop at an instant when the radius is 2 cm.

A conducting circular loop is placed is a uniform magnetic field B =0.20 T with its plane perpendicular to the field . Somehow, the radius of the loop starts shrinking at a constant rate of 1.0 mm s^(-1) . Find the induced emf in the loop at an instant when the radius is 2 cm.

A conducting circular loop is placed is a uniform magnetic field B =0.20 T with its plane perpendicular to the field . Somehow, the radius of the loop starts shrinking at a constant rate of 1.0 mm s^(-1) . Find the induced emf in the loop at an instant when the radius is 2 cm.

ABC is a triangular frame made of a conducting wire and is right angled at B. Its side BC is vertical and AB is horizontal. The frame is placed in a uniform magnetic field B in vertically upward direction. The frame is rotated about its side BC with constant angular speed omega . Resistance of the entire frame is R. Neglect gravity. Length AB = L, BC = 2L . (a) Find the torque needed to keep the frame rotating with constant angular speed. (b) Find the potential difference between points A and C.

A circular coil of wire consists of exactly 100 turns with a total resistance 0.20 Omega . The area of the coil is 100 cm^(2) . The coil is kept in a uniform magnetic field B as shown in Fig. 3.212. The magnetic field is increased at a constant rate of 2 Ts^(-1) . Find the induced current in the coil in A .