R1=100Om,R2=300Om,U=24mA
упс ща
R1 = 100 Om R2=300 om I1 = 25mA = 24*10^-3A U-? R=R1+R2 I=I1=I2 U=IR U=I(R1+R2) U=24*10^-3*(100+300)=9.6B