A conductor (rod) of mass m, length `l` carrying a current i is subjected to a magnetic field of induction B. If the coefficients of friction between the conducting rod and rail is `mu,` find the value of I if the rod starts sliding.

A rod of length l is rotated about its one end, perpendicular to a magnetic field of induction B What is the e.m.f induced in the rod

On an inclined plane, two conducting rails are fixed along the line of greatest slope. A conducting rod AB is placed on the radils so that it is horizontal. A vertically upward uniform magnetic field is present in the region. A current i flows through AB from B to A. The mass of AB is m and the coefficient of friction between the rod and rails is mu . Find the minimum and maximum value of B, so that the rod can stay in equilibrium. Assume that mu lt tan theta

On an inclined plane, two conducting rails are fixed along the line of greatest slope. A conducting rod AB is placed on the radils so that it is horizontal. A vertically upward uniform magnetic field is present in the region. A current i flows through AB from B to A. The mass of AB is m and the coefficient of friction between the rod and rails is mu . Find the minimum and maximum value of B, so that the rod can stay in equilibrium. Assume that mu lt tan theta

A rod of mass M and length L lies on an incline having inclination of theta = 37^(@) . The coefficient of friction between the rod and the incline surface is mu = 0.90 . Find the tension at the mid point of the rod.

PQ is a uniform rod of length l and mass m carrying current i and is suspended in uniform magnetic field of induction vec(B) acting inward as shown in figure. The tension in each string is