Under a constant Electric field of 5 N/C, a positive charge is moved against the field by an external agent such that the P.E of the system is increased by 10 J. Does this imply that the work done by external agent is +10 J?

Yes

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Solution

The correct option is A
Yes

Yes. The change in potential energy of any system is the positive work done by any external agent. Here the change in potential energy of considered system is positive and so will be the work done by external agent.

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Under a constant Electric field of 5 N/C, a positive charge is moved against the field by an external agent such that the P.E of the system is increased by 10 J. Does this imply that the work done by external agent is +10 J? ​

The correct option is A Yes Yes. The change in potential energy of any system is the positive work done by any external agent. Here the change in potential energy of considered system is positive and so will be the work done by external agent.

Under a constant Electric field of 5 N/C, a positive charge is moved against the field by an external agent such that the P.E of the system is increased by 10 J. Does this imply that the work done by external agent is +10 J?

The correct option is A
Yes

Yes. The change in potential energy of any system is the positive work done by any external agent. Here the change in potential energy of considered system is positive and so will be the work done by external agent.