Re: [TCML] Capacitor Conundrum

[jhowson4@xxxxxxxxxxx]

I asked about this in physics this year and my teacher explained that a dielectic is just another term for an insulator.   A capacitor stores its charge in an electric field   Having a really good insulator between the plates allows the plates to be closer together which creates a stronger electric field allowing for more charge to be stored on the plates. 
C=(EoA)/D
Where c= capacitance, A=plate area, Eo=the permittivity of free space constant (dielectric constant) and, D=distance
Most of us have used this equation at some point (if you make your own caps).  if not plug in some numbers and see for your self
the permittivity of free space for a vacuum is 1


My teacher also explained that the capacitor dielectrics are chosen for their ability to resist ionization. 


Jay Howson

-------------- Original message -------------- 
From: Sfxneon@xxxxxxx 

> Hi Everyone, 
> 
> Is it true that the charge of a capacitor is stored in it's dielectric and 
> not the plates, and if so, how and where is the charge stored in a vacuum 
> capacitor? 
> 
> Just wondering, 
> 
> Tony Greer 
> 
> 
> 
> 
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