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Physics-

General

Easy

Question

A charge q is placed at the mid-point of the line joining two charges each of Q. If the whole system is in equilibrium, then the value of q is

$- \frac{Q}{2}$
$+ \frac{Q}{2}$
$- \frac{Q}{4}$
$+ \frac{Q}{4}$

The correct answer is: $negative fraction numerator Q over denominator 4 end fraction$

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