Electric Coil Induction Demo

Primary and Secondary Coil Experiment with Transformer Principles and Induction. Demonstrated that induced potentials are produced either by movement of a permanent or electromagnet or by a change of current in one coil. Two coils wound on separate bobbins one having many turns of fine wire and the other with a few turns of heavy wire. Outer coil is 12.5 cm long and 5 cm in diameter. Fitted with insulated 4 mm socket terminals and supplied with a soft iron core.