Understand how an electric current flows in a circuit through an illustration of a water tank pushing water.

In this circuit the two light bulbs on the far right are in series with each other. The light bulb in the middle is in parallel to the other two light bulbs.

So, electric current works like a river, kinda. Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this video episode of Crash Course Physics, Shini talks to us about electric...

An introduction to the magnetic fields caused by current flow through a wire. [10:01]

This article from Khan Academy provides information about the properties of materials that cause a resistor to resist the flow of current. This information is intended for high school physics students.