How to build a simple electric motor

[Music playing] The Tabletop Explainer Episode Three How to build a simple electric motor, plus how it works. Previous viewing • What is the magnetic field? • Electricity & Magnetism Hand Rules (part one) Materials 1. Cell and leads. 2. Tape. 3. Thin insulated wire. 4. Magnets(s). 5. Cylinder. 6. Scissors. 7. Paperclip (2). [Music Playing] [Demo] Now for how it works… The strip underside of the wire allows the current to flow through the loop. Since the loop is in a magnetic field, this moving charges feel forces and as we discussed in the last episode. Charges moving to the right of the top of the loop feel a push into the screen while charges moving to the left to the bottom of the loop it will a push up of the screen. This forces work to turn the coil, when these happens the insulated portion of the wire turns as well walking the current through the loop eliminating the turning forces. The loop then coast through a full turn ending up where it began, the whole thing starts over again. What do you think? Why do we leave insulation on half the wire? Does it matter what half we strip? What happens if we add more loops? What can be changed to make the motor turn faster? Do you have a question? Ask the explainer. explainer@davidcolarusso.com Special thanks to Broughton High School Science Department. Edinburgh, Scotland. Podcast by David Colarusso Music by Trafic de Blues. Title track from iLife Sound Effects. [Music Playing]