R1=6 Ом
R2=4 Ом
I=9 А
I2=3 А
R3=?
U2=I2×R2=3 A×4 Oм=12 В
U2=U1=U3=U=12 B
R=U/I=12 B/9 A≈1,3 Ом
1/R=1/R1+1/R2+1/R3
1/R3=1/R-(1/R1+1/R2)=1/1,3-(1/6+1/4)≈1/3
R3≈3 Ом
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Answers & Comments
R1=6 Ом
R2=4 Ом
I=9 А
I2=3 А
R3=?
U2=I2×R2=3 A×4 Oм=12 В
U2=U1=U3=U=12 B
R=U/I=12 B/9 A≈1,3 Ом
1/R=1/R1+1/R2+1/R3
1/R3=1/R-(1/R1+1/R2)=1/1,3-(1/6+1/4)≈1/3
R3≈3 Ом