5. Electromagnetics and Photonics

Waves And Propagation — Quiz

Test your understanding of waves and propagation with 5 practice questions.

Practice Questions

Question 1

Which of the following is the intrinsic impedance of free space?

Question 2

Which expression gives the skin depth $\delta$ in a good conductor with conductivity $\sigma$, permeability $\mu$, and angular frequency $\omega$?

Question 3

For the dominant TE$_{10}$ mode in a rectangular waveguide with broad wall dimension $a$, what is the cutoff frequency $f_{c}$ in free space?

Question 4

Which formula gives the guide wavelength $\lambda_{g}$ for the TE$_{10}$ mode in a rectangular waveguide?

Question 5

A signal’s power decays as $P(z)=P_{0}e^{-2\alpha z}$. If $P(d)=P_{0}/4$ at $d=100\,\mathrm{m}$, what is the attenuation constant $\alpha$ (in m^{-1})?