Write true or false for the following statements:

An electron in a metal is free to move anywhere but cannot leave the metal.

Write true or false for the following statements:

The unit of measurement of charge is coulomb.

Write true or false for the following statements:

A metal has a very large number of free electrons and a non-metal very less number of free electrons.

Write true or false for the following statements:

Potential and potential difference are vector quantities.

Write true or false for the following statements:

Potential is positive of positively charged body and is negative of a negatively charged body.