How Electric Generators (dynamos) work
1. Same setup as a motor, with a coil of wire able to rotate between two permanent magnets
2. A turbine spins turning the coil of wire
3. The movement of the wire causes the wire to cut through the magnetic field
4. It experiences a change in magnetic field
5. This creates a potential difference
6. If the coil of wire is connected to a complete circuit, an alternating current (AC) will flow
7. Direct current (DC) current is produced if the ends are connected to a split ring commutator, which reverses the current each half-rotation so current remains positive