JEE Main 2022PhysicsElectrostaticsEasyMCQ

JEE Main 2022Electrostatics Question with Solution

JEE Main 2022 (28 Jun Shift 1)

Question

The three charges q2,q and q2 are placed at the corners A,D and C of a square of side a as shown in figure. The magnitude of electric field E at the corner B of the square, is 

Choose an option

Show full solutionCorrect option: A
Correct answer
Aq4πϵ0a212+12

Step-by-step explanation

EA=kq2a2=kq2a2EC=kq2a2=kq2a2  and  ED=kq2a2=kq2a2

As we can see from diagram, EC & EA are perpendicular.

Therefore, net electric field will be,

=kq2a2+kq2a22+kq2a22=kq2a2+kq2a2=q4πϵ0a212+12

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About this question

This is a previous-year question from JEE Main 2022, covering the Electrostatics 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.