Mataki na 10 sun kasance suna karatun electromagnetism a cikin ajin Kimiyya. Kazalika masu sauƙaƙan solenoids, sun kasance suna gina nasu injinan lantarki masu aiki domin su fahimci yadda suke ci gaba da juyawa. Kuna iya ganin wasu hotunan aikinsu a kasa.