In a potentiometer circuit a cell of EMF $1.5 \mathrm{~V}$ gives balance point at $36 \mathrm{~cm}$ length of wire. If another cell of EMF $2.5 \mathrm{~V}$ replaces the first cell, then at what length of the wire, the balance point occurs ?

In a potentiometer circuit a cell of EMF

$1.5 \mathrm{~V}$ gives balance point at

$36 \mathrm{~cm}$ length of wire. If another cell of EMF

$2.5 \mathrm{~V}$ replaces the first cell, then at what length of the wire, the balance point occurs ?
(A)

$60 \mathrm{~cm}$
B)

$21.6 \mathrm{~cm}$
c

$64 \mathrm{~cm}$
D

$62 \mathrm{~cm}$

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