ElectrostaticsHard
Question
Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 × 10-2 C and 5 × 10-2 C,respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is
Options
A.1 × 10-2 C
B.2 × 10-2 C
C.3 × 10-2 C
D.4 × 10-2 C
Solution
Common potential 
Change on bigger sphere is Q21 = C2V
C14πε0R1
C24πε0R2
(5 - 1) × 10-2
× 4 × 10-2 = 3 × 10-2 C
Change on bigger sphere is Q21 = C2V
C14πε0R1
C24πε0R2
(5 - 1) × 10-2 × 4 × 10-2 = 3 × 10-2 CCreate a free account to view solution
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