A cell of e.m.f. 2V and external resistance 0.5 is connected across a resistor (R). The current that flows is same as that, when a cell of e.m.f. 1.5 V and external resistance 0.3 2 is connected across the same resistor. Then (a) (c) R = 0.3 Ω R = 0.592 (b) R=0.6 Q (d) R = 0.75 Q
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