Questions
A metallic sphere of radius R is carrying a charge Q. Then work done by an external agent in supplying on an additional charge Q to the sphere is
detailed solution
Correct option is D
Capacitance of an isolated sphere, C=4πε0R∴Ui=Q22C=Q28πε0R,Uf=(2Q)22C=4Q22(4πε0R)=Q22πε0R∴W=Uf-Ui=Q22πε0R-Q28πε0R=3Q28πε0RTalk to our academic expert!
Similar Questions
Three point charges of equal value q are placed at the vertices of al equilateral triangle. The resulting lines of force should be sketch as in
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