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In a potentiometer arrangement a cell of...

In a potentiometer arrangement a cell of emf `1.20 V` given a balance point at `30 cm` length of the wire. The cell a now replaced by another cell of unknown emf. The ratio of emfs of the two cells is `1.5 `, calculate the difference in the balancing length of the potentiometer wire in the two cases

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10cm
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