Question

Find the equivalent resistance of the networks shown in figure (32-E21) between the point a and b.

figure (32-E21)

Answer 1

(a)$R_{eff}=\frac{\frac{5r}{3}\times r}{\frac{5r}{3}+r}=\frac{5r}{8}$

(b)$R_{eff}=\left(\frac{r}{3}\right)+r=\frac{4r}{3}$

(c)$R_{eff}=\left(\frac{2r}{2}\right)=r$

(d)$R_{eff}=\frac{r}{4}$

(e)$R_{eff}=r$