Question

The effective resistance between P and Q is :

• A.
  
• B.
  
• C.
  
• D.
  

Answer 1

The correct option is B

R + R =2R (in series)
$\frac{1}{2R}+\frac{1}{R}=\frac{1}{R_1}{R}_1=\frac{3R}{2}$
Now,
$\frac{3R}{2},R$ and R is in series.
So, $R_{eqv}=\frac{8R}{3}$