Work done by electrostatic force of a system of fixed charges on a 10 C charge in bringing it from some reference point to a point A is 100 J. Does this imply that the potential at A is 10 V?

Yes

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Potential will have any random value.

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Solution

The correct option is B No
With respect to the mentioned reference point, the potential at 'A' will be the work done by external agent in bringing a unit positive charge from reference point to A. But here the work is done by electrostatic force. Thus potential at A will be -10 volts.

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Work done by electrostatic force of a system of fixed charges on a 10 C charge in bringing it from some reference point to a point A is 100 J. Does this imply that the potential at A is 10 V?

The correct option is B NoWith respect to the mentioned reference point, the potential at 'A' will be the work done by external agent in bringing a unit positive charge from reference point to A. But here the work is done by electrostatic force. Thus potential at A will be -10 volts.

The correct option is B No
With respect to the mentioned reference point, the potential at 'A' will be the work done by external agent in bringing a unit positive charge from reference point to A. But here the work is done by electrostatic force. Thus potential at A will be -10 volts.