- #1
foxjwill
- 354
- 0
Homework Statement
I found on Wikipedia the formula for energy density of an electric field in a vacuum to be
[tex]U = \frac{1}{2}\epsilon_0 E^2.[/tex]
I was wondering if someone could point me in the right direction to figure out how this was derived.
Homework Equations
The Attempt at a Solution
I was thinking maybe using Gauss's law?