Question

why does we can't charge conduction by friction

Answer 1

In order to explain this question we must know the capabilities of conductors and insulator:

Insulators: materials that do not allow electrons to flow through them easily.

Charging : Insulators can be easily charged by friction as the extra electrons gained cannot easily escape.

Conductors : materials that allow electrons to flow through them easily

Charging : Conductors CANNOT be easily charged by friction as the extra electrons gained can easily escape.

Answer 2

Friction – the transfer of electrons from one object to the other. Conduction – by having two objects TOUCH each other and transfer electrons from one object to the next. Induction – By inducing electrons to move from one object to the other.