A conducting rod of length l is moving in a transverse magnetic field of strength B with veocity v. The resistance of the rod is R. The current in the rod is

A metal rod of length l cuts across a uniform magnetic field B with a velocity v. If the resistance of the circuit of which the rod forms a part is r, then the force required to move the rod is

A uniform rod of mas m is moving with constant velocity v_(0) in a perpendicular uniform magnetic field B as shown. The resistance of rod is r . The current flowing through rod, R_(I) and R_(2) will be

A rod of length l is moving velocity v "in magnetic field" b as seen in . Find the emf induced in all three cases. (a)

A conducting circular loop of radius a and resistance per unit length R is moving with a constant velocity v_0 , parallel to an infinite conducting wire carrying current i_0 . A conducting rod of length 2a is approaching the centre of the loop with a constant velocity v_0/2 along the direction 2 of the current. At the instant t = 0 , the rod comes in contact with the loop at A and starts sliding on the loop with the constant velocity. Neglecting the resistance of the rod and the self-inductance of the circuit, find the following when the rod slides on the loop. (a) The current through the rod when it is at a distance of (a/2) from the point A of the loop. (b) Force required to maintain the velocity of the rod at that instant.

A conducting rod of length l is moving perpendicular to magnetic field.The rod moves from 0 to 2b while field exists only from 0 to b. Find the graph for emf and power dissipated w.r.t x.

a conducting rod of length L = 30.0 cm movies in a magnetic field vec(B) of magnitude 0.450 T directed into the plane of the figure. The rod moves with speed v = 5.00 m s^(-1) in the direction shown. (a) What is motional emf inuced in the rod ? (b) What is the potential difference between the ends of the rod? ( c) When point, a or b , is at higher potential? (d) When the charges in the rod are in equilibrium, what are the magnitude and direction of the electric field within the rod? (e) When the charges in the rod are in the rod in equilibrium, which point, a or b , has an excess of positive charge?

A glass rod of length l moves with velocity in a uniform magnetic field B. What is the e.m.f. induced in the rod ?

A conducting rod of length 1 is moving on a horizontal smooth surface. Magnetic field in the region is vertically downward and magnitude B_(0) . If centre of mass (COM) of the rod is translating with velocity v_(0) and rod rotates about COM with angular velocity v_(0)//l , then potential difference between points O and A will be