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Electric potential V due to a point charge q at distance r is:
Ak q / r²
Bk q / r
Ck q · r
Dk q² / r
Answer & Solution
Correct answer: B. k q / r
1. V(r) = − ∫ E · dr from ∞ to r = k q / r.
2. Potential is a scalar; integrate by simple sum for multiple charges.
3. Note: V scales as 1/r, while E scales as 1/r².
_Source: NCERT Class 12 Physics Ch 2 §2.2 Electric Potential due to a Point Charge_
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