A) \[{{\rho }_{M}}>{{\rho }_{N}}\]
B) \[{{\rho }_{M}}<{{\rho }_{N}}\]
C) \[{{\rho }_{M}}={{\rho }_{N}}\]
D) None of these
Correct Answer: D
Solution :
As resistence \[R=\rho \frac{l}{A}\] \[\Rightarrow \] \[{{R}_{M}}={{\rho }_{M}}\frac{{{l}_{M}}}{{{A}_{M}}}\]and \[{{R}_{N}}={{\rho }_{N}}\frac{{{I}_{N}}}{{{A}_{N}}}\] As per question, \[{{\rho }_{M}}\frac{{{I}_{M}}}{{{A}_{M}}}<{{\rho }_{N}}\frac{{{I}_{N}}}{{{A}_{N}}}\] The relation between \[{{\rho }_{M}}\] and \[{{\rho }_{N}}\] can not be determined on the reference given in the question.You need to login to perform this action.
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