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A cell of em.f. 2V and external
resistance 0.5 Q 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 Q is connected across the same
resistor. Then
R=03Q
(b) R=0.60
R=05Q
(d) R=0.75 92

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