Question

A solid conducting sphere of radius 1 mm is enclosed by a thin metallic shell of radius 2 mm. A charge $q=2\mu C$ is given to the inner sphere. The heat generated in the process when the inner sphere is connected to the outer shell by a conducting wire is :

• A. 12 J
• B. 9 J
• C. 24 J
• D. zero

Answer 1

The correct option is B 9 J