EEVblog #486 - Does Current Flow Through A Capacitor?

Displacement is not a" current", its a flux, just like current through a coil induces magnetic flux, change of potential (voltage) induces displacement. "Lines" of both fluxes are perpendicular. In a certain sense its true that a flow of flux is a cause of inveese "kind of " current flow, as demonstrated in the video. if condenser leaks (air gap brakes) yes , current flows in the traditional sense as well.

Water flows into a bucket and can flow out but it does not flow through the bucket. Dave you are wrong

The charge is stored. The only flow would be leakage. Current does not flow though it.

DaveJones is the greatest after Jim William

This is so wonderful to listen to

Current does flow through a capacitor but only in AC.

Maxwell's math to hertzen waves!

Dave is a sweet person. I'm glad to share the world with wonderful people like him. Thanks for all the knowledge and memories

I appreciate that you attempted to explain this but you really didn't, you just told me that it all works out somehow because physics, I am sorry but that is completely unsatisfactory, you must work out an example or just better not to make the video

So let's not talk about "conventional" current vs electron flow? You are fooling yourself because of this; yes, current flows through the circuit but not through the capacitor itself. Electrons move and collect onto the negative plate of the capacitor and the electric field that builds up pushes other electrons away from the positive plate. So the effect is for current to flow but not physically through the capacitor. Stop thinking about non-existing fake conventional current and it is easy to work out.

Power disapated thru a cap: could I use V^2/Resr?

I've watched this video at least twice before. Have I already commented on it before, and if so, why not just find and edit that comment? I don't know, but here's another one!
I still like the water flow analogy for explaining capacitor current at a basic, "didn't learned the maths" level. Pushing current into one plate displaces current from the other plate, the same as a diaphragm in a pump.
Anyway, didn't Maxwell simply formalize/formula-ize what Faraday (a similarly brilliant man, but he lacked education in the maths) had observed experimentally?

Thanks man :)

I would like to see your video explaining the part when the current goes from 0A to the maximum since by formula i(t)=Imax x e ^ -(t/tau) we can only see the current from the maximum till it reaches 0A when the capacitor is full. At t=0 the current can never be maximum as Uc=0 and the natural low inertia also applies to the capacitors and they also have some resistance... nice lecture about capacitors...

Thank you so much

What is the ultimate origin of the universe (all that exists)? What is you answer? What is your opinion on science and philosophy?

I didn't see Asterix (or Obelix) in the whole video... (asterisk?)

Considering current as the motion of electric charge, define the the current density as the change of flow through surface. It can be perpendicular or non normal to that surface. So there's different kinds of current density's: convection current, conduction current, & displacement current. Convection is through liquid, gas, or vacuum. Conduction has two forms A: Isolated B maintained at a potential. Lastly Displacement resulting in time-varying field.
If we were to be technical wouldn't it be all three types dielectric convection, potential conduction & ac fluctuation displacement? I'm not physics, just EE maj. Now this made me curious in component design

Amazing video <3