kondensator

$E=\frac{1}{2}C{U}^2$

Affe Jkpg skrev :

$E=\frac{1}{2}C{U}^2$

 hittar man denna formel  på formelsamlingen?

 jag kom fram till svaret (0,16 J) stämmar det?

$$\begin{gathered} \frac{1}{2}200*{10}^{-9}*(40*{10}^3{)}^2= \\ {10}^{-7}*4^2*({10}^4{)}^2= \\ 16*{10}^{-7}*{10}^8=160J \end{gathered}$$

Affe Jkpg skrev :

$$\begin{gathered} \frac{1}{2}200*{10}^{-9}*(40*{10}^3{)}^2= \\ {10}^{-7}*4^2*({10}^4{)}^2= \\ 16*{10}^{-7}*{10}^8=160J \end{gathered}$$

 tack!