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: Electromagnet: Electromagnetic Field (Forward vs. Reverse)
Apply current in both directions and notice that the response is different. [0:35]
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....
Khan Academy
Khan Academy: Electromagnet: Discovery of Electromagnetism
Hans Christian Orsted made this famous observation in 1819 when he discovered electromagnetism.
Khan Academy
Khan Academy: Pencil Resistor
A pencil causes a change in the deflection, similar to the effect of adding an electromagnet. Why? Watch this video and find out! [1:04]
Khan Academy
Khan Academy: Series Load
Why does the deflection change when an electromagnet is attached to the circuit? Does it matter what side of the electromagnet we test? Watch this video to find out. [1:11]