- 19

- 5

- Summary
- How to design a parallel plate capacitor.

Hello,

A question came up in my head that I couldn't think of a way to math out.

Say I want to design a parallel plate capacitor. The equation for capacitance is quite simple:

Everything in this equation makes sense, besides for the distance. This is saying that an infinitely small length of material would have infinite capacitance. This doesn't seem right, as a material can only hold so much charge/electric field. How would I go about factoring in the amount of charge a material can hold when designing a parallel plate capacitor?

I'm going through an exercise of designing a silicon dioxide capacitor (dielectric constant = ~4).

A question came up in my head that I couldn't think of a way to math out.

Say I want to design a parallel plate capacitor. The equation for capacitance is quite simple:

Everything in this equation makes sense, besides for the distance. This is saying that an infinitely small length of material would have infinite capacitance. This doesn't seem right, as a material can only hold so much charge/electric field. How would I go about factoring in the amount of charge a material can hold when designing a parallel plate capacitor?

I'm going through an exercise of designing a silicon dioxide capacitor (dielectric constant = ~4).