Question

Each branch in the following circuit has a resistance $R$. The equivalent resistance of the circuit between two points $A$ and $B$

• A. $R$
• B. $2R$
• C. $4R$
• D. $8R$

Answer 1

The correct option is B $2R$



Following pairs of points have same potential,
$F–F^{\prime }$
$G–G^{\prime }$
$C–C^{\prime }$
$D–D^{\prime }$
$E–E^{\prime }$
Hence, connecting all these corresponding points.

Thus, the equivalent resistance of the circuit is $2R$ between $A$ and $B$