`AB` is a resistanceless conducting rod which forms a diameter of a conducting ring
Channel: Doubtnut
Date: 2020-02-09

`AB` is a resistanceless conducting rod which forms a diameter of a conducting ring of radius `r` rotating in a uniform magnetic field `B` as shown in figure. The resistance `R_(1)` and `R_(2)` do not rotate. Then the current through the resistor `R_(1)` is