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
Mass of $A$ and mass of $B$ still remain equal
Mass of $A$ increases
Mass of $B$ decreases
Mass of $B$ increases
What was found by Thales of Miletus ?
Which scientist represented the types of charges ?
Mention the $SI$ unit and value of fundamental charge. Write its smaller units.
How conductors and non-conductors are different ? Why are they not charged by rubbing them with our hands ?
What is Greek meaning of electrics ?