Two identical metallic spheres of exactly equal masses are taken. One is given a positive charge $Q$ coulombs and the other an equal negative charge. Their masses after charging are different.

True

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False

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Solution

The correct option is A True
The metallic ball which is given a charge of $+ Q C o l o u m b s,$ is actually electrons of charge $- Q C o l o u m b s$ being taken out from it. This resulted in a decrease of mass of the sphere. The total mass of the sphere is reduced by the mass of all electrons being taken out.
The sphere which is given a charge of $- Q C o l o u m b s,$ electrons of total charge $- Q C o l o u m b s$ is injected into the sphere, thus increasing its mass by the mass of the total number of electrons injected inside it. Thus their masses after charging are different.

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Two identical metallic spheres of exactly equal masses are taken. One is given a positive charge Q coulombs and the other an equal negative charge. Their masses after charging are different.

Two identical metallic spheres of exactly equal masses are taken. One is given a positive charge $Q$ coulombs and the other an equal negative charge. Their masses after charging are different.