A cell has an open circuit voltage V1 and a closed circuit voltage V2 when a current is flowing through it. Therefore, the internal resistance of the cell is
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Correct Answer: Option E
Explanation:
On open circuit, V1 = I; On closed circuit V2 = IR + Ir
V2 = V1 + Ir
r = \(\frac{(V_2 - V_1)}{I}\)
On open circuit, V1 = I; On closed circuit V2 = IR + Ir
V2 = V1 + Ir
r = \(\frac{(V_2 - V_1)}{I}\)