AB and
CD are fixed conducting smooth rails placed in a vertical plane and joined by a constant current source at its upper end.
PQ is a conducting rod which is free to slide on the rails. A horizontal uniform magnetic field exists in space as shown. If the rod
PQ is released form rest, then :
![223069.PNG](https://search-static.byjusweb.com/question-images/toppr_ext/questions/223069.PNG)