1.

`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 in figure. If the rod `PQ` is released from rest then, A. The rod PQ may move downward with ocnstant accelerationB. The rod PQ may move upward with constant accelerationC. The rod wil move downward with decreasing acceleration and finally acquire a constant velocityD. either a or b

Answer» Correct Answer - D


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