A) \[\rho d/\sqrt{2}\]
B) \[\sqrt{2}\rho d\]
C) \[2rd\]
D) None of these
Correct Answer: A
Solution :
[a] Let each half side has resistance \[r\left( =\rho d/2 \right)\] \[\therefore R=\frac{1}{2}\left[ 2r+\frac{\left( 2r \right)\left( r\sqrt{2} \right)}{\left( 2+\sqrt{2} \right)r} \right]=r\sqrt{2}\] (on solving) \[\therefore R=\rho d/\sqrt{2}\]You need to login to perform this action.
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