JEE Main 2019 — Electrostatics Question with Solution
From: JEE Main 2019 (Online) 9th January Morning Slot
Question
Three charges + Q, q, + Q are placed respectively, at distance, 0, d/2 and d from the origin, on the x-axis. If the net force experienced by + Q, placed at x = 0, is zero, then value of q is :
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Force on + Q charge at x = 0 due to q charge, F1 =
Force on +Q charge at x = 0 due to + Q charge at x = d is,
F2 =
According to the question,
F1 + F2 = 0
F1 = F2
=
4q = Q
q =
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