R1 3ohm R2 10 ohm R3 10 ohm Volts 72V Berapa I nya??

R=30+10+10
R=50 ohm

I=V/R
I=72V/50 ohm
I=1,44 A

Jika paralel :
R total = 1/(1/3+1/10+1/10)
= 1/(16/30)
= 30/16
I = V/R = 72 ÷ 30/16 = 38,4 A