Question Bank MCQ • 1 Mark Section 3: Electromagnetic Theory Electrostatics and Magnetostatics

QB_PH_062: Electrostatics and Magnetostatics

Question Statement

The electrostatic potential $V(r, \theta)$ due to an ideal electric dipole falls off with distance $r$ as:
(A) 1/r^2
(B) 1/r
(C) 1/r^3
(D) \ln(r)
Correct Answer
A
Verified Key

Step-by-Step KaTeX Derivation & Detailed Explanation

### Solution: $V(\mathbf{r}) = \frac{1}{4\pi\epsilon_0} \frac{\mathbf{p} \cdot \hat{r}}{r^2}$.
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