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Q.

The p .d. across the terminals of a battery is 50 V when 11A is drawn and 60 V when 1A is drawn. The emf and internal resistance of the battery are

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a

64 V, 2 Ω

b

62 V, 2Ω

c

61 V,1Ω

d

63 V, 1Ω

answer is C.

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Detailed Solution

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V=E ir 50=E11r(1) 60=E1r(2)  Solving (1) \& (2), r=1Ω E=ir+V E=11×1+50=61V

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