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The work done in bringing a charge q from infinity to a point where the potential is V is
A{'text': 'qV²', 'label': 'A'}
B{'text': 'q²V', 'label': 'B'}
C{'text': 'qV', 'label': 'C'}
D{'text': 'V/q', 'label': 'D'}
Answer & Solution
Correct answer: C. {'text': 'qV', 'label': 'C'}
1. W = ∫ F·dl; equivalently W = q × (V_final − V_initial).
2. V at infinity = 0 by convention, so W = q × V.
3. Other options are dimensionally inconsistent with energy.
_Source: NCERT Class 12 Physics Part I, Ch 2 §2.7_
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