A) 4 : 5
B) 5 : 4
C) 5 : 9
D) 9 : 5
Correct Answer: A
Solution :
\[\frac{{{N}_{s}}}{{{N}_{p}}}=\frac{{{i}_{p}}}{{{i}_{s}}}\Rightarrow \frac{{{i}_{p}}}{{{i}_{s}}}=\frac{4}{5}\]
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