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Two equal charges, 2.0xx10^(-7) C each, ...

Two equal charges, `2.0xx10^(-7) C` each, are held fixed at a separation of 20cm. A third charge of equal magnitude is placed midway between the two both the charges. How much work is done by the electric field during the process?

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The correct Answer is:
`-3.6xx10^(-3)J`
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