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What work is required to bring a charge ...

What work is required to bring a charge `q= 3.00 mu C` originally a distance of 1.50 m from a charge `Q= 20.0 muC` until it is 0.50 m away ?

Text Solution

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W` =DeltaU= KqQ((1)/(0.5)-(1)/(1.5))= Kxx3xx20xx10^(-12)(2-(2)/(3)) `
`implies (Kxx3xx20xx10^(-12)xx4)/(3) = K xx80 xx10^(-12)`
`0.72 ` J
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