Question 248 of 403

A resistance of 4 Ω and a wire of length 5 metres and resistance 5 Ω are joined in series and connected to a cell of e.m.f. 10 V and internal resistance 1 Ω. A parallel combination of two identical cells is balanced across 300 cm of the wire. The e.m.f. E of each cell is [MP PMT 1997]

(1) 1.5 V

(2) 3.0 V

(3) 0.67 V

(4) 1.33 V