Answer
Lalacewar Galvanic yana faruwa ne lokacin da nau'ikan nau'ikan karafa guda biyu ke cikin hulɗar lantarki a gaban na'urar lantarki (kamar ruwan gishiri). Bakin karfe (302/316) ya fi daraja fiye da karfen carbon. A cikin wannan 'ma'aurata galvanic,' gidaje na carbon karfe suna aiki azaman anode kuma suna lalata da fifiko, yayin da zoben bakin karfe yana aiki azaman cathode. Lalacewar yawanci tana faruwa a cikin tsagi, inda ake cinye kayan gida. Wannan 'ya rage' zoben, a ƙarshe yana haifar da asarar bangon tsagi da kuma fitar da zoben a ƙarƙashin kaya. A cikin mahalli na ruwa, ana hana wannan ta amfani da kayan da suka dace, yin amfani da suturar kariya, ko amfani da anodes na hadaya. 'Dokar yankin' kuma ta shafi: ƙaramin anode (gidaje) da babban cathode (zobe) shine mafi munin yanayi.
