Physics

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If the test charge were moved closer to the source charge, would the change in its potential energy be positive, negative or zero? Explain.

• Physics -

We need to know the sign of the source charge as well as of the charge. If they are both of the same sign, you have to push them together and the potential energy goes UP.
If they are of opposite signs, they will pull toward each other and potential energy will go DOWN.

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