JEE Main 2021PhysicsCurrent ElectricityEasyNumerical

JEE Main 2021 — Current Electricity Question with Solution

JEE Main 2021 (18 Mar Shift 2)

Question

Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection.

The value of x, to the nearest integer, is

Enter your answer

Show full solutionCorrect answer: 48
Correct answer
48

Step-by-step explanation

In balanced conditions,

 126=x72-x

⇒x=48 cm.

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About this question

This is a previous-year question from JEE Main 2021, 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.