Question

a) Show that if the electric and magnetic fields are static, no wave propagation results. b) Given part a), why does a wave travel in a switched DC circuit? Hint: consider the 14. frequency content of a step in voltage.

Answer 1

Poission's Eruation: → Gauss, Law

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To rephrase my ques. n with a better picture, when the battery apply a electric potential to an closed circuit wire, the are two currents- the very slow drift current from electrons, and the current in form of EM v ve traveling near the speed of light. What is causing the EM wave the bend and turn along the wire? SE dle ot L by dritt vetaf 버