A) 4 ´ 10?4 A
B) 8 ´ 10?4 A
C) 4 ´ 10?3 A
D) 8 ´ 10?3 A
Correct Answer: A
Solution :
\[E=x\,l=i\rho \,l\]Þ \[i=\frac{E}{\rho l}=\frac{E}{\rho l}=\frac{2.4\times {{10}^{-3}}}{1.2\times 5}=4\times {{10}^{-4}}A\].
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