In a potentiometer of 10 wires, the balance point is obtained on the 6 th  wire. To shift the balance…

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

Increase resistance in the main circuit
Decrease resistance in the main circuit
Increase resistance in series with the cell whose emf is to be measured
Decrease resistance in series with the cell whose emf is to be measured

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.

Asked in: AP EAMCET 2021 (19 Aug Shift 2)

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