In the potentiometer arrangement shown in figure, the null point is obtained at length ℓ. Match Column-I with Column-II.

Physics · Current electricity · Electrical Instruments: Galvanometer, Ammeter, Voltmeter & Potentiometer

JEE Advanced

In the potentiometer arrangement shown in figure, the null point is obtained at length ℓ. Match Column-I with Column-II.

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List 1

  1. (A) If E₁ is increased

  2. (B) If R is increased

  3. (C) If E₂ is increased

List 2

  1. (P) ℓ should increase

  2. (Q) ℓ should decrease

  3. (R) ℓ should remain the same to again get the null point

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