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The SI unit of electric potential is
A{'text': 'newton per coulomb', 'label': 'A'}
B{'text': 'volt-metre', 'label': 'B'}
C{'text': 'joule per coulomb', 'label': 'C'}
D{'text': 'coulomb per joule', 'label': 'D'}
Answer & Solution
Correct answer: C. {'text': 'joule per coulomb', 'label': 'C'}
1. Electric potential at a point = work done per unit positive charge to bring it from infinity to that point.
2. So units are J / C, which is named the volt (V).
3. (A) is the unit of electric field, (C) is field × distance, (D) is the reciprocal of potential.
_Source: NCERT Class 12 Physics Part I, Ch 2 'Electrostatic Potential and Capacitance' §2.2_
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