Mathematics · Current Electricity
In a potentiometer experiment, two cells of e.m.f. E1 and E2 are connected in series aiding each other (E1 > E2), and the balancing length obtained is 64 cm. If the polarity of E2 is reversed (opposing each other), the balancing length becomes 32 cm. The ratio E1E2 is:
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3 : 1
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