Lorentz Force - Homopolar motor (wire)
At Christmas 1821, Michael Faraday, British chemist and physicist invented the very interesting and also very simple DC rotary engine, called homopolar.
This experiment demonstrates variant with wire.
Educational phase: motivation
- ferrite or neodymium cylindric magnet
- copper wire
- battery type AA
|The copper wire around loop shape as shown in the picture. What is important is insulated top and bottom end.|
|Put the battery on the magnet, the magnetic force due to firmly adhere.|
|Put the magnet wire to the battery and it starts to rotate.|
"Put left hand on the wire so that the induction line B enter into the outstretched palm and fingers pointing direction of the current I Bias thumb indicates the direction of the applied force F "