One metallic sphere `A` is given positive charge whereas another identical metallic sphere `B` of exactly same mass as of `A` is given equal amount of negative charge. Then

Options

A. Mass of `A` and mass of `B` still remain equal
B. Mass of `A` increases
C. Mass of `B` decreases
D. Mass of `B` increases

Answer

D

Explanation

Negative charge meand excess of electron which increases the mass of sphere `B`.