AP EAMCET Medical 24 Apr 2019 Shift 1 Paper

A 1 m long thin metal bar of negligible resistance weighing 1 kg rests on two metal supports as shown in the figure. The supports are connected in series to an ideal cell and a resistance. A uniform magnetic field 0.5 T is applied in the region normal to the plane of the paper and into the paper. Maximum emf that the cell can have without breaking the circuit in volt is
(Acceleration due to gravity =10 ms−2)