What is meant by the sensitivity of a potentiometer?
A battery E1 of 4 V and a variable resistance R h are linked in series with the wire AB of the potentiometer. The length of the wire of the potentiometer is 1 metre. When a cell E 2 of e.m.f. 1.5 volt is connected among points A and C, no current flows through E 2 Length of AC = 60 cm.