Charge is stored on the plates of a capacitor.?

Question

Calculate the capacitance of two concentric spherical conductors of radii r and R respectively. What is the capacitance when r=(approx)1/2R, such as when r = 4.000 m and R = 8.320 m?

What is the capacitance when r=(approx)R, such as when r = 3.000 m and R = 3.015 m?

What is the capacitance when R >> r, such as when r = 6.100 m and R = 652.7 m?

Answer 1

Just plug the numbers into the formula for the capacitance of a spherical capacitor.