268560 In the circuit shown in fig., the potential difference between the points \(C\) and \(D\) is balanced against \(40 \mathrm{~cm}\) length of potentiometer wire of total length \(\mathbf{1 0 0} \mathrm{cm}\). In order to balance the potential difference between the points \(D\) and \(E\). The jockey to be pressed on potentiometer wire at a distance of