1. The problem statement, all variables and given/known data Consider two thin conducting spherical shells. The inner shell has a radius r1=15cm and a charge of 10.0 nC. The outer shell has a radius r2=30cm and a charge of -15.0 nC. Find a)the electric field E and b)the electric potential V in A, B and C, with V=0 t r=infinity A: r<r1 B: r1<r<r2 C: r>r2 2. Relevant equations E=kq/r2 V=kq/r 3. The attempt at a solution Using the above formula, I get For the region A E=0 and V=0 because the charge within a conducting shell is 0 For the region B E= k(10 nC)/r2, r1<r<r2 V= k(10 nC/r For the region C E=k (10 nC + -15 nc)/r2=k(-5 nC)/r2 V=k(-5 nC)/r Am I doing it the right way?