A) \[{{10}^{4}}\,\,W\]
B) 10 W
C) 2.5 W
D) 5.0 W
Correct Answer: C
Solution :
Power \[={{V}_{rms}}\times {{i}_{rms}}\cos \phi \] \[\left( \phi =\frac{\pi }{3} \right)\] Power \[=\frac{100}{\sqrt{2}}\times \frac{100\times {{10}^{-3}}}{\sqrt{2}}\times \cos \frac{\pi }{3}\] \[=\frac{10000\times {{10}^{-3}}}{2}\times \frac{1}{2}=2.5\,\,Watt\]You need to login to perform this action.
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