Originally the lawnmower engine used a magneto coil ignition system ... to produce a high voltage spike when influenced by a magnetic field. A magnet is attached to the engine’s crankshaft ...

Originally the lawnmower engine used a magneto coil ignition system ... to produce a high voltage spike when influenced by a magnetic field. A magnet is attached to the engine’s crankshaft ...

A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core ...