Solve the all parts of given problem:
Problem: A spherical capacitor contains a charge of 4.60 nC when connected to a potential difference of 220 V. Its plates are separated by vacuum and the inner radius of the outer shell is 2.00 cm.
Part A: Calculate the capacitance.
Part B: Calculate the radius of the inner sphere.
Part C: Calculate the electric field (magnitude) just outside the surface of the inner sphere.
I need help to find the electric field (magnitude) just outside the surface of the inner sphere.