Question

Referring to the figure below, the effective resistance of the network is

• A. 2$r$
• B. 4$r$
• C. 10$r$
• D. $5r/2$

Answer 1

Answer: (D)

$5r/2$

Answer 2

R_effective =$r + \frac{3r}{2} = \frac{5r}{2}$