A) \[4\text{ }m{{s}^{-1}}\]
B) \[0.4\text{ }m{{s}^{-1}}\]
C) \[4\text{ }cm\text{ }{{s}^{-1}}\]
D) \[0.4\text{ }mm\text{ }{{s}^{-1}}\]
Correct Answer: D
Solution :
Drift velocity in a copper conductor \[{{v}_{d}}=\frac{i}{neA}=\frac{5.4}{8.4\times {{10}^{28}}\times 1.6\times {{10}^{-19}}\times {{10}^{-6}}}\] \[=0.4\times {{10}^{-3}}m{{s}^{-1}}\] \[=0.4\,mm{{s}^{-1}}\]You need to login to perform this action.
You will be redirected in
3 sec