- #1
Mutaja
- 239
- 0
Homework Statement
The insulation in a plate capacitor consists of two layers with the thickness of 1 and 2 mm, and a relative permittivity of 4 and 6. Calculate the field strength in the thinnest layer when the capacitor is connected to a voltage of 5000v.
Homework Equations
The Attempt at a Solution
I know that the answer should be in voltage per meter, and I find the following equation to be relevant:
E = [itex]\frac{F}{Q}[/itex] = [itex]\frac{k*Q}{r^2}[/itex]
where k is a constant.
My problem is the numbers I'm given. Charge density divided by permittivity equals field strength? I don't know what charge density even is (a formula I found while google'ing the problem).
Can anyone guide me as to where I should begin solving this problem?
Appreciate any input.
- Mutaja.