Two identical positive point charges are slowly moved from an initial separation of…

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two identical positive point charges are slowly moved from an initial separation of 0.10 m0.10\,\text{m} to a separation of 0.30 m0.30\,\text{m} while their speeds remain essentially zero. In one sentence, state whether the external agent must supply energy, remove energy, or do no net work on the system, and briefly justify your answer.

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