Q. Four wires $AB,\ BC,\ CD,\ DA$ of resistance $4\ ohm$ each and a fifth wire $BD$ of resistance $8\ ohm$ are joined to form a rectangle $ABCD$ of which $BD$ is a diagonal. The effective resistance between the points $A$ and $B$ is
A) $24\ ohm$
B) $16\ ohm$
C) $\frac{4}{3}\ ohm$
D) $\frac{8}{3}\ ohm$
Explanation
(d) Effective resistance between the points $A$ and $B$ is
$R = \frac{32}{12} = \frac{8}{3}\Omega$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.