Nakong ea tšebeliso ea lithapo le lithapo, hangata ho na le letoto la mathata a kang conductivity e fokolang ea conductor, ts'ebetso ea ho kenya letsoho, le ho lumellana ha lihlahisoa, ho khutsufatsa ka ho toba bophelo ba tšebeletso ea lihlahisoa tse amanang le tsona, esita le ho beha polokeho ea batho le thepa kotsing.