Physics - Current Electricity Question with Solution | TestHub

A battery of emf ${\epsilon }_0=12\mathrm{V}$ is connected across a 4m long uniform wire having resistance $4\Omega /\mathrm{m}$. The cells of small emfs ${\epsilon }_1=2\mathrm{V}$ and ${\epsilon }_2=4\mathrm{V}$ having internal resistance $2\Omega$ and $6\Omega$ respectively, are connected as shown in the figure. If galvanometer shows no deflection at the point N , the distance of point N from the point A is equal to $5\times \mathrm{n}(\mathrm{cm})$. Find the value of n.