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MHT CET Physics question

PhysicsCurrent ElectricityMHT CET

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)

Answer: (C)

Solution

Series: V cm, i.e. cm per volt; in opposition the e.m.f. is

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Question ID VK-045225