Umtya wokufudumeza oshushu ulungele imibhobho yezinto eziphathekayo, kwaye unokusetyenziswa uthotho okanye ngokuhambelana, okanye ngokudibeneyo kulawulo lobushushu. Amandla, i-voltage, kunye nobungakanani inokwenziwa ngokwezifiso ngokweemfuno zabathengi