Qhov siab dua qhov hluav taws xob, qhov muaj zog dua nws yog tsim rau ntawm qhov tam sim no. Yog tias koj lub hwj huam muab hluav taws xob muaj qhov siab, lub zog voltage yuav poob. Nws tsis txawv ntawm qhov hluav taws xob tsawg.
Lub cev muaj zog tsis muaj qhov yuam kev, qhov tseem ceeb yog lub zog, tsis yog qhov ntsuas hluav taws xob
