A cell of e.m.f. \( E \) is connected with an external resistance \( R \), then potential differ...

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A cell of e.m.f. \( E \) is connected with an external resistance \( R \), then potential difference across cell is \( V \). The internal resistance of cell will be [Kerala PMT 2002; MP PMT 2002]
(a) \( \frac{(E-V) R}{E} \)
(b) \( \frac{(E-V) R}{V} \)
(c) \( \frac{(V-E) R}{V} \)
(d) \( \frac{(V-E) R}{E} \)
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