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Electric potential at infinity in the standard syllabus convention is taken as
A{'text': 'the work done against gravity', 'label': 'A'}
B{'text': '+∞', 'label': 'B'}
C{'text': 'zero', 'label': 'C'}
D{'text': 'negative of the source potential', 'label': 'D'}
Answer & Solution
Correct answer: C. {'text': 'zero', 'label': 'C'}
1. Potential is defined up to an additive constant; choosing V(∞) = 0 fixes the constant.
2. With this choice, V due to a +Q point charge is positive everywhere finite.
3. The other options have no physical basis.
_Source: syllabus Physics Part I, Ch 2 §2.3_
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