- #1
leonne
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Homework Statement
2 spheres at a potential diff V what current flows from one to the other
Homework Equations
I=[tex]\int[/tex]j.da
The Attempt at a Solution
My question is about finding the electric field. I thought it would be E=[tex]\sigma[/tex]/[tex]\epsilon[/tex] but they have it has E= Q/4[tex]\pi[/tex]r2[tex]\epsilon[/tex] why is it? Then they find the potential difference and plug that in for Q.
In a similar problem but with cylinders, they do what I thought. The get E=[tex]\lambda[/tex]/[tex]\epsilon[/tex]2[tex]\pi[/tex]s