A) 1 V/ m
B) 0.5 V/m
C) 0.1 V/m
D) 0.2 V/m
Correct Answer: C
Solution :
[c] \[x=\frac{V}{\ell }=\frac{IR}{\ell }=\frac{IR}{\ell }\left( \frac{\rho \ell }{A} \right)=\frac{I\rho }{A}\] |
\[x=\frac{0.2\times 4\times {{10}^{-7}}}{8\times {{10}^{-7}}}=\frac{0.8}{8}=0.1\,V/m.\] |
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