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Two charges 2 C and 6C are separated by a finite distance. If a charge of $-4C$ is added to each of them, the initial force of $12 \times 10^3\;N$ will change to :

\[\begin {array} {1 1} (a)\;4 \times 10^3 N(repulsion) & \quad (b)\;4 \times 10^2 N(repulsion) \\ (c)\;6 \times 10^3 N(attraction) & \quad (d)\;4 \times 10^3 N(attraction) \end {array}\]
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1 Answer

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$(D)\;4 \times 10^3 N(attraction) $
Hence D is the correct answer.
answered Mar 24, 2014 by meena.p
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