Question

Effective resistance between A and B is –

• A. $\frac{R}{3}$
• B. $\frac{R}{2}$
• C. $\frac{2}{3}R$
• D. $\frac{2}{5}$R

Answer 1

Answer: (B)

$\frac{R}{2}$

Answer 2

Balanced wheatstone bridge so eliminate middle branch.

R_AB = 2R || 2R || R = R/2