Объяснение:
U3=U12=R3*I3=8*0.5=4 B
I1=I2=U12/(R1+R2)=4/(4+12)=0.25 A
I4=I1+I3=0.25+0.5=0.75 A
P4=I4^2*R4=0.75^2 * 6 = 3.375 Ватт
Объяснение:
U3=U12=R3*I3=8*0.5=4 B
I1=I2=U12/(R1+R2)=4/(4+12)=0.25 A
I4=I1+I3=0.25+0.5=0.75 A
P4=I4^2*R4=0.75^2 * 6 = 3.375 Ватт