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Electrostatics question

2021 · 20 Jul · Shift 1 · Q52
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  5. /2021 · 20 Jul · Shift 1 · Q52

Electrostatics question

2021 · 20 Jul · Shift 1 · Q52

JEE MainPhysicsElectrostaticsMCQ+4 / −1
A certain charge Q is divided into two parts q and (Q −-− q). How should the charges Q and q be divided so that q and (Q −-− q) placed at a certain distance apart experience maximum electrostatic repulsion?
  1. A
    Q = 2q
  2. B
    Q = 4q
  3. C
    Q = 3q
  4. D
    Q = q2{q \over 2}2q​
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