Le coil yokuhlawula luhlobo olusebenzayo lwekhoyili yokuhlawula, isantya sokuhlawula i-coil sinokungqinelaniswa kunye nesantya sokudweba umatshini wokudweba ucingo, inzuzo kukuba ayibangeli ukuba ucingo lucinezele omnye nomnye ngexesha inkqubo yokuhlawula, ukwenza ikhoyili yokuhlawula igudiswe.