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Potential at a point from the work done to move a charge from a point at known potential

The same question, asked 3 times: 2 May 2023 S1*, 19 Apr 2025 S1*, 13 May 2026 S1. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2 May 2023 S1

    9
    90 J of work is done to move an electric charge of magnitude 3 C from a place A, where potential is −10-10 V to another place B, where potential is V1V_1 volt. The value of V1V_1 is

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  2. Question 2

    19 Apr 2025 S1

    2
    Let ' W ' joule be the work done to move an electric charge ' qq ' coulomb from a place AA, where potential is -5 volt to another place B where potential is ' V ' volt. The value of ' V ' is

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  3. Question 3

    13 May 2026 S1

    126
    If 100100 J of work has to be done in moving an electric charge of 44 C from a place, where potential is −10-10 V to another place where potential is V volt. The value of V is

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