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R1 = 3 ohm
R2 = 4 ohm
R3 = 7 ohm
R4= 10 ohm
R5 = 12 ohm
ditanyakan: Rpengganti (Rtot)?
Jawab:
karena dipasangkan parallel maka:
1/Rp = 1/R1+1/R2+1/R3+1/R4+1/R5
1/Rp = 1/3 + 1/4 + 1/7 + 1/10 + 1/12
1/Rp = 280+210+120+84+70/840
Rp = 840/764
Rp=1,099 ohm