Consider the situation shown in . The wire PQ has a negligible  resistance and is made to slide on
Channel: Doubtnut
Date: 12/07/2020

Consider the situation shown in . The wire PQ has a negligible  resistance and is made to slide on the three rails with a constant speed of `5 cm s^(-1) . Find the current in the `10 Omega` resistor when the switch  S is thrown to (a) the middle rail (b)  the bottom rail.