retupmoc
Mar7-04, 11:16 AM
Im ok when there is a constant charge density in the sphere but this question's really troubling me:
A spherically symmetrical charge distribution has charge densit p(r)=po/r for r<R and p(r)=0 for r>R. Show that the electric field strength is equal to poR^2/2åor^2. where R is the radius of the sphere.
I used a sphere as the gaussian surface with the electric field pointing outwards. ive gotten as far as E(4pi*r^2) = q enc/åo. But i am now unsure how to find the charge enclosed. i think im going about this the right way. Any ideas?
Thanks retupmoc
A spherically symmetrical charge distribution has charge densit p(r)=po/r for r<R and p(r)=0 for r>R. Show that the electric field strength is equal to poR^2/2åor^2. where R is the radius of the sphere.
I used a sphere as the gaussian surface with the electric field pointing outwards. ive gotten as far as E(4pi*r^2) = q enc/åo. But i am now unsure how to find the charge enclosed. i think im going about this the right way. Any ideas?
Thanks retupmoc