Q. In the above question, the resistance between the square faces is
A) $3 \times 10^{- 9}ohm$
B) $3 \times 10^{- 7}ohm$
C) $3 \times 10^{- 5}ohm$
D) $3 \times 10^{- 3}ohm$
Explanation
(d) In the above question for calculating equivalent resistance between two opposite square faces
$l = 100\ cm = 1m,A = 1\ cm^{2} = 10^{- 4}m^{2}$, so resistance
$R = 3 \times 10^{- 7} \times \frac{1}{10^{- 4}} = 3 \times 10^{- 3}\ \Omega$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.