JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 25 July 2022, Shift 2, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

In a potentiometer arrangement, a cell of emf 1.20 V gives a balance point at 36 cm length of wire. This cell is now replaced by another cell of emf 1.80 V. The difference in balancing length of potentiometer wire in above conditions will be ________ cm.

Official answer

NTA final key.

Chapter: Current Electricity
Topic: Potentiometer
Idea tested: Comparing EMF of Two Cells

Same idea in other shifts

Asked 4× in all

24 Jun 2022, Shift 1 · Q59In a potentiometer arrangement, a cell gives a balancing point at 75 cm length of wire. This cell is now replaced by another cell of…EasyNumerical value
25 Feb 2021, Shift 1 · Q30In the given circuit of potentiometer, the potential difference E across AB (10 m length) is larger than $E_1$ and $E_2$ as well. For key…EasyNumerical valueHas a figure
25 Jul 2021, Shift 2 · Q20In the given potentiometer circuit arrangement, the balancing length AC is measured to be 250 cm. When the galvanometer connection is…MediumDiagram basedHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.