look , thirst for info , plz tell me?

Question

what are actually electric charges , are they simply classified as positive and negative , or its a type of a measurable quantity
what is coulomb ?????? is it the ability to conduct electricity by an electron , somethin' which can be measured like one electron has 1.66 * 10 ^ -19 C charge on it . plz help , iam desperate, not getting , confused .

Answer 1

You are confused. Electrons don't conduct electricity. They, collectively, make electricity. They do work by going from high potential energy to low potential energy. The potential energy is usually caused by concentration of charge, because like charges repel each other. The movement of electrons is what we call electricity. Charge is a measure of the difference between number of protons and number of electrons, if you multiply the difference by the charge for one electron you get the charge.
A coulomb is a unit designed to be more usefull than the charge on an electron because it is large enough to work easily with..

Answer 2

electric charge has a negative charge for an eletron and a positive charge for a proton.

Coulomb unit of an electrical charge is meter kilogram second

A coulomb of an electrical charge equal to the quantity of charge transferred in one second by a steady current of one ampere.

Answer 3

Look up the Milikan oil drop experiment. Electrons don't conduct electricity, they are a source. Different materials do have different conductivities. Length and cross sectional area also have an impact on resistance/Impedance of electrical flow

Answer 4

http://en.wikipedia.org/wiki/Electric_charge
http://en.wikipedia.org/wiki/Coulomb