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Two isolated conducting spheres S1 and S2 of radius 23R and 13R have 12μC and 3μC charges, respectively, and are at a large distance from each other. They are now connected by a conducting wire. A long time after this is done the charges on S1 and S2 are respectively:

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a
6μC  and  3μC
b
+4.5μC  and  4.5μC
c
3μC  and  6μC
d
4.5μC  on  both

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detailed solution

Correct option is A

Now Q1+Q2=Q1+Q2=12μC3μC=9μC
&V1=V2KQ12R3=KQ2R3Q1=2Q22Q2+Q2=9μCQ2=3μC&Q1=6μC

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