Ee-2 The Alternating Current Generator
Published: Tuesday 14 March 2006 - Updated: Tuesday 29 March 2011
To demonstrate the conversion of mechanical into electrical energy.
- A.C. generator
- Demonstration galvanometer
- Disc permanent magnet
Click on pictures to enlarge.
The apparatus consists of a coil of wire free to rotate about a horizontal axis. The ends of the coil are connected to slip rings. Rotating the coil in the earths magnetic field produces an alternating e.m.f. that is displayed by the galvanometer deflections
The deflection magnitude may be increased by tha addition of a small permanent magnet beneath the coil whereupon the relationship between the field direction and induced e.m.f. becomes more obvious.