A) 65 watt
B) 33 watt
C) 300 watt
D) 100 watt
Correct Answer: A
Solution :
\[{{P}_{S}}=\frac{{{P}_{1}}{{P}_{2}}}{{{P}_{1}}+{{P}_{2}}}=\frac{100\times 200}{100+200}=\frac{200}{3}\approx 65\,watt\]
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