Two charges, each equal to \( q \), are kept at \( x=-a \) and \( x=a \) on the \( x \)-axis. A ...
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0Two charges, each equal to \( q \), are kept at \( x=-a \) and \( x=a \) on the \( x \)-axis. A particle of mass \( m \) and charge \( q_{0}=\frac{q}{2} \) is placed at the origin. If charge \( q_{0} \) is given a small displacement \( (ya) \) along the \( y \) -axis, the net force acting on the particle is proportional to :
(1) \( y \)
(2) \( -y \)
(3) \( \frac{1}{y} \)
\( -(4)-\frac{1}{y} \)
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