A potentiometer consists of two wires $AC$ and $CB$ of same material and of equal lengths but diameters in the ratio $3 : 1.$ Then the potential gradients on the two wires will be in the ratio :-
A$3 : 1$
B$1 : 3$
C$9 : 1$
D$1 : 9$
Medium
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D$1 : 9$
d
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