A) \[5/7\]
B) \[7/5\]
C) \[25/49\]
D) \[49/25\]
Correct Answer: B
Solution :
[b] \[I=nAe{{v}_{d}}\] or \[I\propto n{{v}_{d}}\] \[\therefore \,\,\,\,\,\,\,\frac{{{I}_{e}}}{{{I}_{h}}}=\frac{{{n}_{e}}{{v}_{e}}}{{{n}_{h}}{{v}_{h}}}\] or \[\frac{{{n}_{e}}}{{{n}_{h}}}=\frac{{{I}_{e}}}{{{I}_{h}}}\times \frac{{{v}_{h}}}{{{v}_{e}}}=\frac{7}{4}\times \frac{4}{5}=\frac{7}{5}\]You need to login to perform this action.
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