Faraday's Experiment - Eme Set - 20, 40, 80 Turn Coils
To demonstrate magnetic induction and to show that the induced current is proportional to the number of turns in the secondary coil.
EME Induction demonstration with small bar magnet.
Three coils are connected in series with a projection galvenometer on an overhead projector. A bar magnet is thrust through one of the coils, inducing current in the coil which is shown on the meter. Three coils are included on the device: 20, 40, and 80 turns; the bigger the coil the greater the induced current.