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Electrostatics question

2004 · Shift 0 · Q129

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JEE Main
Physics
Electrostatics
2004 · Shift 0 · Q129

Electrostatics question

2004 · Shift 0 · Q129

JEE MainPhysicsElectrostaticsMCQ+4 / −1

Four charges equal to -

Q

are placed at the four corners of a square and a charge

q

is at its center. If the system is in equilibrium the value of

q

is

A
$- {Q \over 2}\left( {1 + 2\sqrt 2 } \right)$
B
${Q \over 4}\left( {1 + 2\sqrt 2 } \right)$
C
$- {Q \over 4}\left( {1 + 2\sqrt 2 } \right)$
D
${Q \over 2}\left( {1 + 2\sqrt 2 } \right)$

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