Explicação:
a)
Rp=(R2+R3).R4/(R2+R3)+R4
Rp=(60+90).50/(60+90)+50
Rp=150.50/150+50
Rp=7500/200
Rp=37,5 ohms
Req=R1+Rp+R5
Req=20+37,5+12,5
Req=70 ohms
b) Ut=210V
Req=70ohms
It=?
it=Ut/Req
It=210/70
It=3A
c)
U1=R1.it=20.3=60V
U2=R2.it=60.3=120V
U3=R3.it=90.3=270V
U4=R4.it=50.3=150V
U5=R5.it=12,5.3=37,5V
d)
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Explicação:
a)
Rp=(R2+R3).R4/(R2+R3)+R4
Rp=(60+90).50/(60+90)+50
Rp=150.50/150+50
Rp=7500/200
Rp=37,5 ohms
Req=R1+Rp+R5
Req=20+37,5+12,5
Req=70 ohms
b) Ut=210V
Req=70ohms
It=?
it=Ut/Req
It=210/70
It=3A
c)
U1=R1.it=20.3=60V
U2=R2.it=60.3=120V
U3=R3.it=90.3=270V
U4=R4.it=50.3=150V
U5=R5.it=12,5.3=37,5V
d)