A point charge +3Q is resting at the center of a sphericalconducting shell that

Question

A point charge +3Q is resting at the center of a sphericalconducting shell that has inner radius a and outer radius b. Thecharge on the outer surface of the shell, at radius b, is+2Q. a) What is the magnitude of the charge on the inner surface ofthe shell, at radius a? Explain your answer very clearly andthoroughly using Gauss's law. b) What is the shell's net charge (which does not count thepoint charge)? A point charge +3Q is resting at the center of a sphericalconducting shell that has inner radius a and outer radius b. Thecharge on the outer surface of the shell, at radius b, is+2Q. a) What is the magnitude of the charge on the inner surface ofthe shell, at radius a? Explain your answer very clearly andthoroughly using Gauss's law. b) What is the shell's net charge (which does not count thepoint charge)?

Explanation / Answer

The sphere is conducted. So the electric field inside it iszero. Gauss'law state that Q/0=E*S. With the Guassian surface be a spherical surface which has theradius of r with a

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