4
votes
5answers
158 views

Are E and B fields in phase in electromagnetic radiation?

I recently wrote this answer, in which I said: Radio waves are electromagnetic radiation. Electromagnetic radiation contains of two components, one electrical and one magnetic. These components ...
1
vote
1answer
165 views

How can I describe the behavior of an inductor without reference to a magnet?

In class we have been given an exercise to simulate capacitance, inductance, and resistance without reference to - well, without refernece to much of anything. The resistor is straightforward, ...
3
votes
3answers
141 views

A few questions regarding B/E-fields in practical circuitry

I have been trying a few learning resources to help unlearn some of the notions that electrons flow through as energy. Chiefly this resource is what I have used: Amasci - IN A SIMPLE CIRCUIT, WHERE ...
7
votes
8answers
597 views

Does a radio station main amplifier work at the speed of light?

I'm having an argument with a classmate and we can't agree. He tells me that it's not possible for the amplifier of a radio station to amplify the input signal "instantaneously" (at the speed of ...