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Homework Statement
Consider two concentric conductive hollow spherical shells. The inner shell has radius R1 and holds the charge +q. The outer shell has charge R2 and holds charge -q. Determine an expression for the potential difference between the shells.
Homework Equations
V = q / (4 pi ε0 r) when r greater or equal to the radius of the shell
V = q / (4 pi ε0 R) when r is less than the radius (R) of the shell
The Attempt at a Solution
I said due to fact that electric potential has superposition principle. The total electric potential between the shells:
therefore: V = q / (4 pi ε0) (1/r - 1/R2)
I am unsure if this is true or not any help would be appreciated, Thanks