A) \[\frac{v}{8}\]
B) \[\frac{v}{4}\]
C) \[\frac{v}{2}\]
D) v
Correct Answer: D
Solution :
\[I=neA{{v}_{d}}\] \[{{v}_{d}}=\frac{I}{neA}\] \[\Rightarrow \,\,\,\,\,\,\,\,{{v}_{d}}\propto \frac{I}{A}\] \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\frac{{{v}_{d}}'}{{{v}_{d}}}=\,\,\frac{I'/A'}{I/A}=\,\,\frac{2I/2A}{I/A}=1\] or \[{{v}_{d}}^{'}={{v}_{d}}=v\]You need to login to perform this action.
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