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NEET Questions / Physics / Electrostatic Charges and Fields
A thin, uniformly charged ring of radius RRR carries a total charge QQQ. A point charge qqq is placed at the center of the ring. The force required to move the charge qqq a small distance zzz along the axis of the ring is proportional to:
z2z^2z2
1/z21/z^21/z2
zzz
1/z1/z1/z
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