- #1
Vellyr
- 5
- 0
So I basically understand the C = ε0(A/d) formula. Larger area means there is room for more electrons, smaller d means larger E field, which pulls electrons onto the opposite plate more strongly.
What's tripping me up is when dielectrics come into the picture. When a dielectric is inserted, the E field goes down, but the capacitance goes up. I feel like I get the reasons for each of these effects individually, but why does dropping the E field between the plates not reduce capacitance? Is it just canceled out by the positive effect of the dielectric?
What's tripping me up is when dielectrics come into the picture. When a dielectric is inserted, the E field goes down, but the capacitance goes up. I feel like I get the reasons for each of these effects individually, but why does dropping the E field between the plates not reduce capacitance? Is it just canceled out by the positive effect of the dielectric?