The potential difference across the terminals of a battery is 50V when 6A of cur

Question

The potential difference across the terminals of a battery is 50V when 6A of current is drawn and 60V when 1A is drawn. The emf and internal resistance of the battery are

Options:

A . 62V, 2Ω

B . 63V, 1Ω

C . 61V, 1Ω

D . 64V, 2Ω

Answer: Option A
:
A
V= E - Ir
50 = E - 6r

\to

(1)
60 = E - 1r

\to

(2)
(2) - (1) 10 = 5r; r = 2

Ω

E = 62V

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