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