(a) Explain the concept of the Poynting Vector and derive Poynting's…

Question

(a) Explain the concept of the Poynting Vector and derive Poynting's Theorem. Discuss its physical significance.

(b) Show that $\vec{\nabla} r^n = n r^{n-2} \cdot \vec{r}$, where $\vec{r} = x\hat{i} + y\hat{j} + z\hat{k}$.

Related pages

• Poynting Theorem — topic
• Advanced Engineering Physics syllabus