Physics - Current Electricity Question with Solution | TestHub

In a potentiometer experiment a cell of e.m.f$1.5\mathrm{ }\mathrm{V}$connected in the secondary circuit gives a balancing length of$165\mathrm{ }\mathrm{c}\mathrm{m}$of the wire. If a resistance of$5\mathrm{ }\mathrm{\Omega }$is connected in parallel to the cell, the balancing length of the wire is$150\mathrm{ }\mathrm{c}\mathrm{m}$. The internal resistance of the cell is