A) \[{{V}_{d}}={{E}^{2}}\]
B) \[{{V}_{d}}\alpha E\]
C) \[{{V}_{d}}\alpha \frac{1}{E}\]
D) (d )\[{{V}_{d}}\alpha {{E}^{2}}\]
Correct Answer: B
Solution :
Drift velocity is given by \[{{\upsilon }_{d}}=\frac{e}{m}\times \frac{V}{I}\] As \[V=El,\] or \[E=\frac{V}{l}\] or \[{{\upsilon }_{d}}=\frac{e}{m}\times \frac{El}{l}\] So, \[{{\upsilon }_{d}}\propto E\]
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