Question

Consider a hollow metal sphere of inner radius r=16.5 cm and outer radius R-20.5 cm. The sphere is not charged, but there is a point charge of q-253 nC at the centre of the sphere (a) Calculate the charge density on the sphere's outer surface (b) Calculate the electric field strength at the sphere's outer surface. PAPER SOLUTION Solve the problem on paper first, including all four IDEA steps. You will become a better physicist that way! Have you finished your paper solution already? Oyes no ▼ INTERPRET ldentify all of the true statements. A. There is no net charge on the sphere's inner surface. B. There is no electric field in the hollow cavity. C.Gauss's law for several different Gaussian surfaces is helpful for this problem. D. There is no electric field in the air outside of the sphere. E. There is no net charge inside the metal (i.e. away from all surfaces). F. There is no electric field inside the metal (i.e. away from all surfaces). G. There is no net charge on the sphere's outer surface H. None of the above ▼ DEVELOP In your answers below, type EO to represent E0 (a) Derive an algebraic expression for the surface charge density on the sphere's outer surface (b) Derive an algebraic expression for the electric field strength at the sphere's outer surface. FVAL LIATF

Answer 1

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