Question

In a potentiometer of 10 wires, the balance point is obtained on the 7^th wire. To shift the balance point to 9th wire, we should ______.

Options

• decrease resistance in the main circuit.

• increase resistance in the main circuit.

• decrease resistance in series with the cell whose emf is to be measured.

• increase resistance in series with the cell whose emf is to be determined.

Answer 1

In a potentiometer of 10 wires, the balance point is obtained on the 7^th wire. To shift the balance point to 9th wire, we should increase resistance in series with the cell whose emf is to be determined.