Multiple choice

What is the S.I. unit of potential difference?

  1. Volt

  2. Coulomb

  3. Ampere

  4. None of these

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A Correct answer
Explanation

The volt (V) is the SI unit of potential difference, defined as one joule per coulomb. Coulomb is the unit of electric charge. Ampere is the unit of electric current. Potential difference measures the work done per unit charge.