Positive charge \( Q \) is distributed uniformly over a circular ring of radius \( R \). A parti...

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Positive charge \( Q \) is distributed uniformly over a circular ring of radius \( R \). A particle having a mass \( m \) and a negative charge \( q \), is placed on its axis at a distance \( x \) from the center. If \( x \ll R \), find the time period of oscillation of the particle if it is released from there
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