Questions
Consider parallel conducting rails separated by a distance l. There exists a uniform magnetic field B perpendicular to the plane of the rails as shown in figure. Two conducting wires each of length l are placed so as to slide on parallel conducting rails. One of the wires is given a velocity parallel to the rails. Till steady state is achieved, loss in kinetic energy of the system is
detailed solution
Correct option is C
In steady state, velocity of both wires will become same.2mv=mv0⇒v=v0/2Loss in KE =12mv02-212mv2=14mv02Similar Questions
A rod closing the circuit shown in figure moves along a U shaped wire at a constant speed v under the action of the force F. The circuit is in a uniform magnetic field perpendicular to the plane. Calculate F if the rate of heat generation in the circuit is Q.
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