Consider the situation shown in the figure. The wire `PQ` has mass `m` , resistance

Consider the situation shown in the figure. The wire `PQ` has mass `m` , resistance `r` and can slide 0n the smooth, horizontal parallel rails separated by a distance `l` . The resistance of the rais is negiligible. A uniform magnetic field `B` exists in the reactangular region and a resistance `R` connects the rail outside the field region. At `t=0` , the wire `PQ` is pushed toward right with a speed `v_(0)` . Find (a) the current in the loop at an instant when the speed of the wire `PQ` is `v` (b) the acceleration of the wire as this instant (c) the velocity `v` as a function of `x` (d) the maximum distance the wire will move (e) the velocity as a function of time