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Field Lines in Different Scenarios

A thin ring o...

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A thin ring of radius 'r' made up of a conducting material having charge 'q' .Find the increase in the tension the ring if a point charge Q is placed at centre of ring 1) Qq/8π²ε_0r² 2)Qq/4π r²ε_0 3)Qq/8π r²ε_0 4)Q/16π²r²ε_{

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Field Lines in Different Scenarios

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