From the following,what charges can be present on oil drops in Millikan's experiment? (Here $e$ is the electronic charge)

What is quantization of charge? What is the reason for quantization?

We have three identical metallic spheres $A, B$ and $C$. $A$ is given a charge $Q$,and $B$ and $C$ are uncharged. The following processes of touching of two spheres are carried out in succession. Each process is carried out with sufficient time.
$(i)$ $A$ and $B$
$(ii)$ $B$ and $C$
$(iii)$ $C$ and $A$
$(iv)$ $A$ and $B$
$(v)$ $B$ and $C$
The final charges on the spheres are

Fill in the blanks:
$(i)$ $A$ static charge produces a ...... field around it. (Electric,Magnetic)
$(ii)$ $A$ moving charge produces a ...... field around it.

What are called electrically charged and electrically neutral bodies?

If $10^{9}$ electrons move out of a body to another body every second,how much time is required to get a total charge of $1 \, C$ on the other body?