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MHT CET202120 Sep 2021Morning ShiftPhysicsCurrent ElectricityActual

In potentiometer experiment, null point is obtained at a particular point for a cell on potentiometer wire ' x ' cm long. If length of potentiometer wire is increased by few centimeters without changing the cell, the balancing length will [Driving source is not changed]

Options

  1. Awill not change
  2. Bincrease
  3. Cdecrease
  4. Dbecome zero

Correct answer

B. increase

Step-by-step solution

If the length of potentiometer wire increase, the potential gradient will decrease. Hence to balance the same p.d., the length will increase.

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