When a glass rod is rubbed with silk, it
Gains electrons from silk
Gives electrons to silk
Gains protons from silk
Gives protons to silk
Write the activity to make simple electroscope.
Five balls numbered $1$ to $5$ are suspended using separate threads. Pairs $(1, 2)$, $(2, 4)$ and $(4, 1)$ show electrostatic attraction, while pair $(2, 3)$ and $(4, 5)$ show repulsion. Therefore ball $1$ must be
Find change in mass of a body if it is given $+2C$ charge.
Write definition of unit Coulomb.
What are called electrically charged and electrically neutral bodies ?