- #1
dido28
- 14
- 0
hi every one on an exercise on book we ask us to find the electrical field for a uniformly charged ring where we going to find : E=kqz/(z2+R2)3/2
then we have to derivate it wth respect to z and we find : dE/dz=kq*(R2+2z2)/(z2+R2)5/2
so my question is how do we get this derivation ?
then we have to derivate it wth respect to z and we find : dE/dz=kq*(R2+2z2)/(z2+R2)5/2
so my question is how do we get this derivation ?