All Questions
5 questions
0
votes
1
answer
98
views
Capacitance matrix is diagonally dominant
I have heard of the following claim “the capacitance matrix of an isolated system of conductors is diagonally dominant” but I couldn’t find a way of proving it myself or any reference for that matter. ...
- 402
1
vote
0
answers
42
views
Why do two infinite planes contribute to Electric Field but not two surfaces in co-axial cylinder
I understand why the electric field between two infinite planes is $\frac{\sigma}{\epsilon_0}{\vec{e_z}}$. Both planes contribute to the field - the upper positive charged plane "pushes" ...
- 149
0
votes
1
answer
611
views
Questions about Maxwell capacitance matrix and reference point selection
Let's consider a system of n conductors. If I'm not mistaken, the Maxwell capacitance matrix tells us that the following system of equations applies:
\begin{align}
Q_1 &= C_{11}V_1 + C_{12}V_{12}...
- 103
0
votes
0
answers
207
views
Why should we use good conductors as electrodes of a capacitor?
I was asked if and why why should the electrodes of a capacitor should be good electrical conductors.
It seemed obvious to me that if I want to form a Helmholtz double layer (because that's what ...
- 1,334
0
votes
1
answer
146
views
Charging a capacitor
Below is an excerpt from a physics textbook:
One common way to charge a capacitor is to connect these two wires to opposite terminals of a battery. Once the charges $Q$ and $-Q$ are established on ...
- 103