An explanation of how magnetic attraction and repulsion are used to make both DC and AC electric motors. Check out the video clips for understanding

This video demonstrates how to apply current in various directions to a single loop of wire. [1:12]

By pulsing the connection to the battery we can cause a compass to spin. Watch this video to figure out how this works. [0:47]

In this video, Khan Academy shows you how to build a simple motor using magnets. [7:18]

The final video in a series of videos that finishes the explanation of how a commutator will allow a loop of wire to continue spinning in a magnetic field. Understand how this spinning magenta field allows work to be done known as an...

A video exploring electric motors. This video is part 2 in a 3 part video series. This video shows that a commutator can be used in order to keep the loop of wire rotating in the magnetic field. [10:36]

This video is an introduction to the vector dot product. [10:32]

Sal Khan helps you understand the differences between the dot and cross products.[10:45]

Sal Khan shows that there will be a net torque on a loop of current in a wire in this video. He also shows that this net torque will cause the loop to rotate. [10:35]

A demonstration of the simplest electric motor showing current being applied to a single loop of wire. This is the principal observation leading to all electric motors. Based on actual observations from 1819 by Hans Christian Oersted....