Circuits (part 1) - Khan Academy Video

From this video I learnt that a resistor dictates how fast that current flows because it basically slows down the electrons moving from the negative charge to the positive charge. Therefore, current (I) is actually just the flow of charge per second. In addition, voltage refers to how badly the electrons want to get from the negative side to the positive, and how fast they're going. Lastly, Ohm's law means that V = I*R, or V/R = I.