Q. Four resistances of $100\ \Omega$ each are connected in the form of square. Then, the effective resistance along the diagonal points is
A) $200\ \Omega$
B) $400\ \Omega$
C) $100\ \Omega$
D) $150\ \Omega$
Explanation
(c) The figure can be drawn as follows
$R_{AC} = \frac{200 \times 200}{200 + 200} = 100\Omega$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.