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

Question

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

In a potentiometer of 10 wires, the balance point is obtained on the `7^(th)`. To shift the balance point to `9^(th)` wire, we should
A. decrease resistance in the main circuit.
B. increase resistance in the main circuit.
C. decrease resistance in series the cell whose emf is to be measured.
D. increase resistance in series with the cell whose emf is to be determined

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
To shift the balance point on higher length, the potential gradient of the wire is to be decreased. The same can be obtained by decreasing the current of the main circuit, which is possible by increasing the resistance in series of potentiometer wire.

4 views Answered 2023-02-05 15:29