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Electric Potential

In the given ...

Question

In the given figure, the work done in taking the charge q from M to N is

\frac{2 k q Q}{a}

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\frac{2 \sqrt{2} k q Q}{a}

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\frac{\sqrt{2} k q Q}{a}

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zero

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Solution

The correct option is D zero
Work done in taking the charge $q$ from $M$ to $N$ zero because displacement will be zero.

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W_{1}

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W_{1} > W_{2}, W_{1} = W_{2}

W_{1} < W_{2}

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