In a potentiometer of 10 wires, the balance point is obtained on the 6 th wire. To shift the balance point to 8 th wire, we should

Step-by-step solution

By increasing resistance in the primary circuit the P.G of the wire decreases thereby it requires more length to measure the emf of secondary cell. ∴ By increasing the resistance in series circuit we can move balancing point from sixth to eight wire.