question_answer

Calculate the resistance of a copper wire of length 1 m and area of cross section\[2\,m{{m}^{2}}\]. Resistivity of the copper wire is\[1.7\times {{10}^{-8}}\,\Omega m\].

A) \[7.5\times {{10}^{-2}}\,\Omega \]

B) \[8.5\times {{10}^{-3}}\,\Omega \]

C) \[3.5\times {{10}^{-3}}\,\Omega \]

D) \[4.5\times {{10}^{-3}}\,\Omega \]

E) None of these