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Work done moving a charge over an equipotential surface

The same question, asked 2 times: 10 May 2023 S2, 20 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    10 May 2023 S2

    7
    If a unit charge is taken from one point to another point over an equipotential surface, then

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  2. Question 2

    20 Apr 2026 S2

    125
    If charge +q+q is taken from one point to another over an equipotential surface, then

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