Magnetic Generators
Most recent answer: 06/04/2008
Q:
Is the electrical power made by a spinning magnet inside a coil of wire,affected by the speed of how fast it (the magnet)turns? I've found a way to make the magnet spin very fast with very little energy. Thank you for your help.
David A.
- David A. (age 11)
Center School, Longmeadow, MA
- David A. (age 11)
Center School, Longmeadow, MA
A:
The good news is that the power does increase with speed. The bad news is that if you put your magnet inside a coil in a circuit that lets the current flow, there will be a torque from the coil slowing down the magnet. You will never get more power out than you put in. That's the first law of thermodynamics.
Mike W.
Mike W.
(published on 06/04/2008)