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A charge of $20 \mu C$ produces an electric field. Two points are $10\;cm$ and $5\;cm$ from this charge. Find the values of potentials at these points and also find the amount of work done to take an electron from one point to the other.

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$(B)\;2.88 × 10^{-13} J $
Hence B is the correct answer.
answered Jun 9, 2014 by meena.p

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