Charge, conductors, voltage and EPE questions?

[Medeiros]

This is 'optional homework' that the teachers don't see and we write down just to practice. So I want someone to review it and tell me if I truly understand these concepts :)
thanks in advance

1.What is the smallest charge (quantum of charge) that any paricle an exert?
A: An electron/proton of charge: 1.602E-19 C

2. WHAT ARE CONDUCTORS AND INSULATORS:
A:Conductors are materials with relatively low resistance and thus conduct electricity well. (They either have electrons in the conductance band or free electrons due to metallic bonding?)
Insulators are materials with high resistance and thus do not conduct electricity well.

4. DEFINE ELECTRIC POTENTIAL AND ELECTRIC POTENTIAL ENERGY:
A:Electric potential, voltage, is the energy carried by each coulomb of charge per unit time. It is the 'electrical pressure' of current.
Electric potential energy is the potential of work to be done by an electric field on a charged particle

 

[mfb]

1.What is the smallest charge (quantum of charge) that any paricle an exert?

Exert is a strange word here. "Have"?

Electric potential, voltage, is the energy carried by each coulomb of charge per unit time

There is no time involved.

Apart from that: right.

 

[Medeiros]

Exert is a strange word here. "Have"?There is no time involved.

Apart from that: right.

I have no idea why I wrote time lol
And yeah for the first one, that's what the university wrote