"In the helium lamp an electron from the discharge impacts on a He atom, ionises it and at the same time excites it to a superposition of several states. For simplicity, let us consider only the states that are of practical importance and assume that the He+ ion immediately after the impact is...
Actually, that's what my lecturer has written on the board (except for the words "charging a capacitor" and "discharging a capacitor").
Before the sentences was a diagram of a DC circuit with a capacitor and a resistor.
I don't know what to make of these notes, really!
My lecturer tells me that the EM energy does not flow through the wire! I don't know what to believe, really!
Also, how is this related to Poynting's Theorem?
Let's say you have a DC circuit with a capacitor and a resistor.
How does electromagnetic energy flow within the system? Through the wires? In space between and around wires?
N.B. Why/how would EM energy flow in the first place?
Homework Statement
Charging a capacitor - charge flows through a resistor and is accelerated between the capacitor plates
Discharging a capacitor - charge loses energy by collision in the resistor.
Homework Equations
N/A
The Attempt at a Solution
Please help understand the two...