فى الدائرة الموضحة بالشكل عين قيمة المقاومة (Ry)
Vx=IxRx\ \ \ \ \ \ \ \therefore Vx=0.03\times10=0.3volt
\ \ \ \therefore Vz=V1-Vx
\ \ \ \therefore Vz=1.5-0.3=1.2volt
\ \ \ \therefore I=\frac{Vz}{Rz}\ \ \ \ \ \ \ \ \ \ \therefore I=\frac{1.2}{8}=0.15A
\ \ \ \therefore Iy=I1-Ix
\ \ \ \therefore Iy=0.15-0.03=0.12A
\ \ \ \therefore Vy=Vx=0.3volt
\therefore Ry=\frac{V}{Iy}
\therefore Ry=\frac{0.3}{0.12}=2.5\Omega