- #1

- 34

- 0

i am trying to calculate the electric field of a spherical charge distribution ρ=ρ[itex]_{0}[/itex]e[itex]^{-kr}[/itex], where r is the radial distance. i am a little bit embarressed,but i have to say that i am not comfortable with spherical coordinates in practical calculations. i would appreciate if somebody could help me thru this:

the field is independent of the angels, so it is sufficient to look at the z-axis. i choose r=z the distance should be given by:

[itex]

\mid r-r'\mid^{2}=z^{2}+r'^{2}-2zr'cos\theta'

[/itex]

now, to caluclate the coulombintegral i need the differencevector between the source and the field points. how would i do that?

thanks in advance for your help!