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:
Text Solution
Verified by ExpertsThe correct answer is:
B
At equilibrium potential of both sphere becomes same if charge of sphere one x and other sphere Q – x then where Q = 4 × 10 –2 C
3x = Q – x
4x = Q
x = 
= 1 × 10 –2
Q' = Q – x = 3 × 10 –2 C
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