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When two cells of e.m.f. 1.5 V and 1.1 V...

When two cells of e.m.f. 1.5 V and 1.1 V connected in series are balanced on a potentiometer, the balancing length is 260 cm. The balancing length, when they are connected in opposition is (in cm)

A

100

B

110

C

40

D

65

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