Ezweni lanamuhla, ugesi udlala indima ebalulekile ekunikezeni amandla amathuluzi nemishini ehlukahlukene. Kodwa-ke, ikhwalithi yokunikezwa kwamandla ngokuvamile ayihambisani, okwenza amazinga kagesi aguquguquke. Lokhu kuguquguquka kungase kuthinte kabi izinto zikagesi nemishini, okuholela ekulimaleni okungaba khona kanye nokwehluleka. Yilapho isilawuli se-voltage sisebenza khona, siqinisekisa ukunikezwa kwamandla okuzinzile nokungashintshi ukuvimbela ukushintshashintsha kwamandla kagesi.