A small charged sphere of radius a=1.10 cm is suspended by a nylon thread inside a larger neutral, conducting sphere. The larger sphere has an interior radius b=4.70 cm and is 0.5 cm thick. The charge on the small sphere is q=0.90 nC. The two spheres are concentric and insulated from their surroundings. For the following questions, the origin of our coordinates is the center of the spheres.© BrainMass Inc. brainmass.com September 22, 2018, 5:46 am ad1c9bdddf - https://brainmass.com/physics/gauss-law/magnitude-electric-potential-113473
Since the conducting sphere is neutral, the total charge in the system is the same q as on the inner sphere, and it will determine the electric field on the outside.
This electric field E on the outside can be found from the ...
140+ words of explained calculation to help calculation the magnitude of electric potential at the outside of a sphere.