Physics

Physics · electromagnetism

Problem

Transform the integrals over a closed surface ( b⃗\vec{b} is a constant vector, and n⃗\vec{n} is a unit vector normal to the surface) I⃗=∮n⃗φdS,I⃗=∮[n⃗×A⃗]dS,I⃗=∮(n⃗⋅b⃗)A⃗dS\vec{I}=\oint \vec{n} \varphi d S, \quad \vec{I}=\oint[\vec{n} \times \vec{A}] d S, \quad \vec{I}=\oint(\vec{n} \cdot \vec{b}) \vec{A} d S into the integrals over the volume inside the surface.

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