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Charging by Friction

In an uniform...

Question

In an uniform electric field, the electric potential of origin is 40 volt & 20 volt of each point (10, 0) & (0, 10) , find potential of point (20, 20)

zero

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-20 volt

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40 volt

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-40 volt

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Solution

The correct option is D -40 volt
For uniform $\to E$ potential gradient in constant

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