Решите срочно 1,2 задания ! Физика! найдите все значения в таблице

1.R13=R1*R3/R1+R3R13=20*50/20+50=1000/70=14,2 ОмR=R13+R2+R4+R5R=14,2+30+15+10=69.2 ОмU=I*RU2=5*30=150BI2=I1+I3=I4=I5=IU4=I*R4U4=5*15=75BU5=I*R5U5=5*10=50BI13=I1+I3I13=5+5=10AU13=I13*R13U13=10*14,2=142BU=U13+U2+U4+U5U=142+150+75+50=417BI=U/RI1=U13/R1I1=142/20=7.1AI3=U13/R3I3=142/50=2,9AI2=I4=I5=5AI=10+5+5+5=25AU1=U3=142BI1=7,1A; I3=2,9A; I4=5A; I5=5A; U1=142B; U2=150B; U3=142B; U4=75B; U5=50B; R=69,2 Ом; I=25A; U=417B2.R12=R1*R2/R1+R2R12=3*6/3+6=18/9=2 ОмR45=R4*R5/R4+R5R45=12*6/12+6=72/18=4 ОмR=R12+R3+R45R=2+2+4=8 ОмI1=I3=I45=2AU=I*RU1=I1*R1U1=2*3=6BU1=U2=UU4=U5=UU12=I12*R12U12=3*2=6BI=U/RI2=U2/R2I2=6/6=1AI12=I1+I2I12=2+1=3AI3=2AU3=I3*R3U3=2*2=4BI45=2AU45=I45*R45U45=2*4=8BI4=U45/R4I4=8/12=0.7AI5=U45/R5I5=8/6=1,3AI=I12+I3+I45I=3+2+2=7AU4=I4*R4U4=0.7*12=8.4BU5=I5*R5U5=1,3*6=7,8AU=U12+U3+U45U=6+4+8=18BI2=1A; I3=2A; I4=0,7A; I5=1,3A; U1=6B; U2=6B; U3=4B; U4=8,4B; U5=7,8A; R=8 Ом; I=7A; U=18B