Teaching UP PGT Mock Test Series 2024 Electromagnetic Theory Vector Calculus Fundamental Theorems of Vector Calculus
The divergence of a 3-dimensional vector \( \frac{𝑟̂}{r^3} \) (𝑟̂ is the unit radial vector) is:
1
\( -\frac{1}{r^4}\)
2
Zero
3
\( \frac{1}{r^3}\)
4
\( -\frac{3}{r^4} \)