JEE Main 2023PhysicsCurrent ElectricityPotentiometereasyNumerical

JEE Main 2023 — Current Electricity Question with Solution

From: JEE Main 2023 (Online) 1st February Morning Shift

Question

In an experiment to find emf of a cell using potentiometer, the length of null point for a cell of emf is found to be . If this cell is replaced by another cell of emf E, the length-of null point increases by . The value of is . The value of is ____________.

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Show full solutionCorrect answer: 25
Correct answer
25

Step-by-step explanation

E1 = 1.5 V, l1 = 60 cm, l2 = 40 cm + 60 cm = 100 cm



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About this question

This is a previous-year question from JEE Main 2023, covering the Current Electricity chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.