Ta da, direct current, the first step towards electricity as we know and use it.

Current is the rate of electric charge per time which passes through a wire. Electrons are always moving but mostly they just bounce around and don't really go anywhere. Making electrons move along a wire to produce current can be achieved by adding potential difference, or an electric field.

Current is measured by how fast charge is moving, and uses the symbol "I."

Current is measured in amperes (or A) so 1 A = 1C/s

Here is the catch: since protons and electron were given the charge of positive and negative when they were first found, it becomes convenient to ignore the fact that the electrons are moving one way and instead agree that there is a positive current moving in the opposite direction along the wire. Although this seems contradictory to common sense, it is the format everyone uses, all standardized tests, and all scientists. Odd but true. So if the electrons are moving to the right along the wire, the current is actually moving to the left.

When the electrons move along the conductor they have to bounce around in the wire, some materials allow the electrons to move more easily than others. The amount of hassle the conductor gives the electrons is called resistance.

(Commonly written as V = IR )

Notice that with constant v and a small current, the resistance is large. If the v is the same and the current is high, the resistance must be low.

(or how to determine amount of resistance of an object)

First I'm going to give you the formula then I'm going to explain it.

L	length of the object
A	area of the object which electrons are going through
	the resistivity of a substance
R	the resistance of the entire object