Two isolated conducting spheres S1 and S2 of radius 2 3 R and 1 3 R have 12 mC and –3 mC 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 :

Question:

Two isolated conducting spheres $S_{1}$ and $S_{2}$ of radius $\frac{2}{3} R$ and $\frac{1}{3} R$ have $12 \mu \mathrm{C}$ and $-3 \mu \mathrm{C}$ 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 $S_{1}$ and $S_{2}$ are respectively :

  1. $4.5 \mu \mathrm{C}$ on both

  2. $+4.5 \mu \mathrm{C}$ and $-4.5 \mu \mathrm{C}$

  3. $3 \mu \mathrm{C}$ and $6 \mu \mathrm{C}$

  4. $6 \mu \mathrm{C}$ and $3 \mu \mathrm{C}$


Correct Option: 4

Solution:

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