A) Directly proportional to x
B) Directly proportional to y
C) Independent of x
D) Independent of y.
Correct Answer: C
Solution :
We know, \[R=\rho \frac{l}{A}\] Here, resistivity \[=\rho ,\,l=x,\,A=xy\] \[\therefore \]\[R=\rho \frac{l}{A}=\rho \frac{x}{xy}\] or,\[R=\frac{\rho }{y}\] Thus, resistance between two opposite faces, shown by the shaded areas in the figure is independent of \[x.\]You need to login to perform this action.
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