Electronics and CommunicationElectromagnetic Field TheoryDifficulty: Medium
If \[\overrightarrow F \left( {\rho ,\,\phi ,\,z} \right) = \rho {{\hat a}_\rho } + \rho {\sin ^2}\phi {{\hat a}_\phi } - z{{\hat a}_z}\] which one of the following is TRUE?
Select the correct option to test your answer:
Correct Answer: Option D (\[\nabla .\overrightarrow F \left| {_{\phi = \frac{\pi }{4}}} \right. = 2\nabla .\overrightarrow F \left| {_{\phi = 0}} \right.\])
Verified correct option for Electronics and Communication (Electromagnetic Field Theory).