(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the electric field a distance z from the centre of spherical sphere of radius R which carries uniform density B. treat Z<R (inside) and Z>R (outside)………. By using law of cosine how to solve this problem?

2. Relevant equations

1/4∏εo∫ (σ da/ r^2) cos(theta)

3. The attempt at a solution

substituting r by law of cosin.. r=√R^2+z^2-2Rzcos(theta)

1/4∏εo ∫[σ da/ R^2+z^2-2Rzcos(theta)]cos(theta)

i am stuck here what should i do next

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Find the electric field a distance z from the centre of spherical

**Physics Forums | Science Articles, Homework Help, Discussion**