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

QB_PH_073: Electrostatics and Magnetostatics

Question Statement

Under the Coulomb gauge, the magnetic vector potential $\mathbf{A}$ satisfies:
(A) \nabla \cdot \mathbf{A} = 0
(B) \nabla \times \mathbf{A} = 0
(C) \nabla \cdot \mathbf{A} + \frac{1}{c^2}\frac{\partial V}{\partial t} = 0
(D) \nabla^2 \mathbf{A} = 0
Correct Answer
A
Verified Key

Step-by-Step KaTeX Derivation & Detailed Explanation

### Solution: The Coulomb gauge condition is $\nabla \cdot \mathbf{A} = 0$.
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