PHYS4210 Quiz 6: Electromagnetic Theory - Prof. James J. Napolitano, Quizzes of Physics

Download PHYS4210 Quiz 6: Electromagnetic Theory - Prof. James J. Napolitano and more Quizzes Physics in PDF only on Docsity! Name: PHYS4210 Electromagnetic Theory Quiz 6 April 2009 This is a closed book quiz! Write the best choice in the space next to the question. 1. A wave component moving in the z-direction is written as the complex function E(z, t) = E0e −i(kz−ωt) Which of the following represents the physical wave corresponding to this function? A. E0 sin(kz − ωt) B. E0 cos(kz − ωt) C. E0 sin[i(kz − ωt)] D. E0 cos[i(kz − ωt)] E. E0 cos(kz − ωt) + E0 sin(kz − ωt) 2. The “wavelength” of an transverse, traveling electromagnetic plane wave is the smallest spatial distance between two maxima of the electric field. For a wave having (angular) frequency ω in a medium with (real) index of refraction n, the wavelength is A. 2πc/ω B. 2πnc/ω C. 2πc/nω D. 2π(n− 1)c/ω E. 2πc/(n− 1)ω 3. A plane wave is incident on a plane boundary between two dielectric media with different indices of refraction. What boundary conditions are imposed so that the reflected and transmitted waves can be uniquely determined? I: Continuous parallel electric fields II: Continuous perpendicular electric fields III: Continuous parallel magnetic fields IV: Continuous perpendicular magnetic fields A. I only B. III only C. I and II only D. III and IV only E. I and III only