If two conducting spheres are separately charged and then brought in contact:

the total energy of the two spheres is conserved

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the total charge on the two spheres is conserved

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both the total energy and charge are conserved

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the final potential is always the mean of the original potential of the two spheres

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Solution

The correct option is B the total charge on the two spheres is conserved
The total $c h a r g e$ on the two spheres will be conserved energy may not because if they are of different size or have different charge then some of their energy might lost in redistribution of charge.

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Two conducting spheres of radii r1 and r2 are equally charged.The ratio of their potential is?

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