Formula: I=U/R 120/12=10A

1. Qarshiligi 12 om va kuchlanishi 120 V bo'lsa, qarshilik (resistor) dagi Tok kuchi qanday bo'ladi?

Formula: I=U/R

120/12=10A

2. O'tkazuvchining qarshiligi 6 Om va undagi tok kuchi 0,2 A bo'lsa zanjirni oxiridagi kuchlanishni aniqlang.

Formula: U=I*R

6*0,2=1,2V

3. Agar 110 V kuchlanish va tok kuchi 2 A bo'lsa, o'tkazgichning qarshiligini aniqlang.

Formula: R=U/I

110/2=55 Om

4. Cho'ntak chirog'i(fonari)ni zanjirining qarshiligi 16,6 Om bo'lsa va chiroq 2,5 V batareyaga ulangan bo'lsa, chiroqning kuchlanishi qanday?

Formula: I=U/R

2,5/16,6=0,15