B is conducring (excersise is called two conducting spheres foorgot to mention this)
Q has a positive value (Q=3*10^-7) (the excersice contains values but since that doesn't help me much when trying to understand the problem I left them out)
I mean I can calculate it if they had the same charge...
Homework Statement
A hollow spherical shell (B) with inner radius R2 and esternal radius R3 is negatively charged with Q.
A spherical conducter (A) with radius R1 is placed within the the shell. A is charged with Q.
The centers of both shells coincide.
Then a negative point charge q is placed...