Topic: Engineering Mathematics
If $\phi$ is a scalar point function, the value of curl Grad $\phi$ is
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A. 0
Explanation: The curl of the gradient of any scalar field $\phi$ is always zero vector. Mathematically, $\nabla \times (\nabla \phi) = 0$.