Q. One metallic sphere $A$ is given positive charge whereas another identical sphere $B$ of exactly same mass as of $A$ is given equal amount of negative charge. Then
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
Explanation
(d) Negative charge means excess of electrons which increases the mass of sphere $B$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.