A rod of mass `m`, length `l` and resistance `R` is sliding down on a smooth inclined parallel rails with a constant velocity `v`. If a uniform horizontal magnetic field `B` exists, then find the value of `B`.

A rod of mass m , length l and resistance R is sliding down on a smooth inclined parallel rails with a cinstant velocity v . If a uniform horizontal magnetic field B exists, then find thevalue of B .

A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig __

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 straight horizontal conductor PQ of length l, and mass_ m slides down on two smooth conducting fixed parallel rails, set inclined at an angle 9 to the horizontal as shown in figure-5.30. The top end of the bar are connected with a capacitor of capacitance C. The system is placed in a uniform magnetic field, in the direction perpendicular to the inclined plane formed by the rails as shown in figure. If the resistance of the bars and the sliding conductor are negligible calculate the acceleration of sliding conductor as a function of time ifit is released from rest at t= 0

Figure showns a smooth pair of thick metallic rails connected across a battery of emf epsilon having a negligible internal resistance.A wire ab of length l and resistance r can slide smoothly on the rails.The entire system lies in a horizontal plane and is immersed in a uniform vertical magnetic field B .At an instant t the wire at this instant. (b)What is the force acting on the wire at this instant. (c)Show that after some time the wire ab will slide with a constant velocity.Find this velocity.