In a potentiometer circuit a cell of EMF 1 . 5 V gives balance point at 36 cm length of wire. If another cell of EMF 2 . 5 V replaces the first cell, then at what length of the wire, the balance point

Question

In a potentiometer circuit a cell of EMF 1 . 5 V gives balance point at 36 cm length of wire. If another cell of EMF 2 . 5 V replaces the first cell, then at what length of the wire, the balance point occurs?NEET 2021

TestHub · Accepted Answer

Given, E 1 = 1 . 5 V l 1 = 36 cm E 2 = 2 . 5 v l 2 = ? AS we know, E 1 E 2 = l 1 l 2 1 · 5 2 · 5 = 36 l 2 3 5 = 36 l 2 l 2 = 60 cm

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