A) 9 : 4
B) 4 : 3
C) 3 : 8
D) 3 : 2
Correct Answer: D
Solution :
\[{{P}_{rated}}\propto \frac{1}{R}\] \[\frac{{{R}_{1}}}{{{R}_{2}}}=\frac{{{P}_{2}}}{{{P}_{1}}}=\frac{60}{40}=\frac{3}{2}\]
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