I hope this is ample info.
Both shells are made of insulating material, and the charges are distributed uniformly over its surface. Take the electric potential to be zero at an infinite distance from both shells. What is the magnitude of the potential difference between the surfaces
of the...
I am able to get V1 = kq/a - 4kq/b
and V2 = kq/b + -4kq/b
For some reason the solution says it is V1-V2 as opposed to V2-V1.
Maybe has something to do with positive shell in the center and negative outer shell? I know the electric field goes from positive to negative, but I don't know how...