Two metallic spheres of radii 1 cm and 3 cm are given charges of −1×10−2C and 5×10−2C respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is:
A
3×10−2C
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B
4×10−2C
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C
1×10−2C
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D
2×10−2C
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Solution
The correct option is A3×10−2C Qtotal=4×10−2C Charge distribution α capacitance α radius Qsmall:Qbig=1:3