Consider two parallel, conducting frictionless tracks are kept in gravity free space as shown in the figure. A movable conductor PQ, initially kept at OA, given a velocity 10 ms−1 towards right. If space contains a magnetic field upon the distance moved by conductor PQ from OA line and given by →B=cx(−^k)[c=constant=1 S.I. unit]. The mass of conductor PQ is 1 kg and length of PQ is 1 m. Answer the following questions based on above passage.