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[" 52.Positive and negative point charge...

[" 52.Positive and negative point charges of equal "],[" magnitude are kept at "(0,0,(a)/(2))" and "(0,0,(-a)/(2))],[" respectively.The work done by the electric field "],[" when another positive point charge is moved "],[" from "(-a,0,0)" to "(0,a,0)" is "],[" (a) positive "quad " (b) negative "],[" (c) zero "],[" (d) depends on the path connecting the initial "],[" and final positions "]

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