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Potential Energy - External Viewpoint

The figure sh...

Question

The figure shows the field lines of a positive point charge. The work done by the field in moving a small positive charge from Q to P is:

A

Zero

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B

Positive

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C

Negative

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D

Data insufficient

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Solution

The correct option is D Negative
In moving a small positive charge from $Q$ to $P$ , work has to be done by an external agency against the electric field. Therefore, work done by the field is negative.

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