CURRENT FLOW!!!

The flow of charge is called the current and it is the rate at which electric charges pass though a conductor. The charged particle can be either positive or negative.
In order for a charge to flow, it needs a push (a force) and it is supplied by voltage, or potential difference. The charge flows from high potential energy to low potential energy.
The direction of electron movement is from a region of negative potential to a region of positive potential. Therefore electric current can be said to flow from negative to positive.
Resistance is a feature of a material that determines the flow of electric charge. The unit of resistance is ohm. The resistance varies in different materials.


Practice problem.
What is the current of a circuit that has 3 V and 0.5 ohm of resistance?

Answer:
You first have to modify the equation V = IR to I = V / R. Then you just have to input the numbers into this equation. I = 3 / 0.5 = 6 A [ampere].

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