Khan Academy
Khan Academy: Electricity and Magnetism: Magnetism 10: Electric Motors
Why the circuit will keep flipping over in an electric motor.
Khan Academy
Khan Academy: Electricity and Magnetism: Magnetism 9: Electric Motors
Video lecture explores using a magnetic field to exert torque on a rotating circuit. [10:36]
Khan Academy
Khan Academy: Hair Dryer: Compare the Hair Dryer Motor to the One You Can Build
In this video we compare our hair dryer motor to the motor we built. [2:15]
Khan Academy
Khan Academy: Electricity and Magnetism: Electric Motors
A video lecture that shows how using a commutator can solve the flipping problem and create an electric motor. [6:40]
Learn Engineering
Learn Engineering: Working of Synchronous Motor
A video discussing a synchronous motor, which is a motor that is run at a constant speed. Learn how there is an interaction between a constant and rotating magnetic field that allows the motor to have a constant speed. Site also includes...
Learn Engineering
Learn Engineering: Brushless Dc Motor: How It Works?
Learn how a brushless motor works in this video. Video investigates how these motors are more reliable and less noisy producing a motor that is desired. Site also includes an article which discusses concepts found in the video. [4:39]
University of Virginia
Uva Virtual Lab: Ac & Dc Electric Motors
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
Khan Academy
Khan Academy: Electromagnetic Field (Loop)
This video demonstrates how to apply current in various directions to a single loop of wire. [1:12]
Khan Academy
Khan Academy: Spinning Compass
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]
Khan Academy
Khan Academy: Build Your Own Motor
In this video, Khan Academy shows you how to build a simple motor using magnets. [7:18]
Khan Academy
Khan Academy: Electric Motors (Part 3)
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...
Khan Academy
Khan Academy: Electric Motors (Part 2)
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]
Khan Academy
Khan Academy: The Dot Product
This video is an introduction to the vector dot product. [10:32]
Khan Academy
Khan Academy: Dot vs. Cross Product
Sal Khan helps you understand the differences between the dot and cross products.[10:45]
Khan Academy
Khan Academy: Electric Motors (Part 1)
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]
Khan Academy
Khan Academy: Electromagnet: Electromagnetic Field (Loop)
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....