Electrostatics Question 202

Question: A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge -q. The surface charge density on the inner and outer surfaces of the spherical shell will be [AMU 2002]

Options:

A) 2Q4πb2,Q4πc2

B) Q4πb2,Q4πc2

C) 0,Q4πc2

D) None of the above

Show Answer

Answer:

Correct Answer: A

Solution:

(a) Surface charge density (s) =ChargeSurface area So σinner=2Q4πb2 and σOuter=Q4πc2



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