All Questions
8
questions
2
votes
1
answer
67
views
Does parasitic capacitance contribute to the magnetic flux?
When modeling a real inductor, typically the equivalent circuit is the following one:
Source
A series resistance and parallel capacitor is added.
This model works very well to explain the following ...
- 187
10
votes
5
answers
3k
views
Is there a magnetic field around a fully charged capacitor?
I know that a magnetic field exists when a capacitor is in the process of charging/discharging:
(a) But what if the capacitor is fully charged? Will the magnetic field still persist? Something like:
...
- 649
0
votes
4
answers
632
views
I'm worried about current in an inductor at $t=0$ when it is connected with a DC source
When I connect a dc battery to an ideal pure inductor i think the voltage across inductor should be infinity. Because the rate of change of current should be infinity.because in no time say in $0$ ...
- 1
0
votes
0
answers
227
views
Proper utilization of Ampere’s Law
I am tasked with finding the magnetic field due to a bus bar, which seems to have the exact same set up as Problem 7.62 in the fourth edition of Griffiths' textbook on Electrodynamics.
To which I ...
- 3,200
2
votes
1
answer
2k
views
Magnetic field from displacement currents in a capacitor, and an applied exterior magnetic field
If an exterior magnetic field ($B$) is applied to oppose or support the magnetic field produced by the displacement currents ($B_D$), what would happen to the electric field within the gap? And the ...
- 35
0
votes
2
answers
739
views
Magnetic-Dual of a Capacitor
A cylindrical capacitor (two circular metal plates in vacuum) creates an electric field profile.
As a thought experiment, can I set up currents to make a magnetic field which completely matches
this ...
- 1,016
1
vote
1
answer
2k
views
Cylindrical capacitor with 2 dielectrics
I want to calculate $\vec{E}$ and $\vec{H}$ inside this capacitor:
So this would be a cylindrical capacitor but with two different dielectrics in it (they both occupy the same amount of space, excuse ...
- 1,183
2
votes
2
answers
6k
views
Putting a capacitor into a strong magnetic field, will this change the capacity?
I'm wondering, does a magnetic field change the number of electrons, placed and displaced on the two plates of a capacitor. To prove or disprove this, I think the capacitor could be connected to an ...
- 10.6k