JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 24 June 2022, Shift 1, Physics Q59

Question 59 of 90 in this shift, Physics question 29 of 30, Section B.

In a potentiometer arrangement, a cell gives a balancing point at 75 cm length of wire. This cell is now replaced by another cell of unknown emf. If the ratio of the emf's of two cells respectively is

3:2

, the difference in the balancing length of the potentiometer wire in above two cases will be ______ cm.

Official answer

NTA final key (2022 Session 1).

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

Same topic in other shifts

All Potentiometer questions

28 Jul 2022, Shift 1 · Q55As shown in the figure, a potentiometer wire of resistance 20 $\Omega$ and length 300 cm is connected with resistance box (R.B.) and a…HardNumerical valueHas a figure
25 Jul 2021, Shift 1 · Q11In the given figure, there is a circuit of potentiometer of length AB = 10 m. The resistance per unit length is $0.1\ \Omega$ per cm.…MediumSingle correctHas a figure
8 Jan 2020, Shift 1 · Q20The length of a potentiometer wire is 1200 cm and it carries a current of 60 mA. For a cell of emf 5 V and internal resistance of 20…MediumSingle correct

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 42 of the 174 JEE Main shifts held from 2017 to 2026.