/sci/ - Science & Math

>>11415723
>you get a displacement current through the dielectric

that statement can be misleading, theres no actual electron current through the dielectric, its only an "apparent current displacement" if there was such a current in practice the capacitor will be faulty.

the plaques acumulate charge that latter can be discharged but not through the dielectric it returns only through the same terminals that feed the plaques , even in an AC circuit the dielectric does not present an actual current displacement.
the dielectric is always an insulator, no one wants a leaky capacitor in their circuits...

this posts has complementary details of the physical behaviour:
>>11409821
>>11412006


and vid related 7:10 https://youtu.be/ppWBwZS4e7A?t=429

btw theres also vacuum capacitors and the reason is like I mentioned before:

>A vacuum capacitor uses a high vacuum as the dielectric instead of air or other insulating material. This allows for a higher voltage rating than an air dielectric using a smaller total volume

https://en.wikipedia.org/wiki/Vacuum_variable_capacitor