A) \[{{10}^{10}}\,m/\sec \]
B) \[{{10}^{-2}}\,cm/\sec \]
C) \[{{10}^{4}}\,cm/\sec \]
D) \[{{10}^{-1}}\,cm/\sec \]
Correct Answer: B
Solution :
Order of drift velocity \[={{10}^{-4}}m/sec={{10}^{-2}}cm/sec\]
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