A) 275 W
B) 550 W
C) 675 W
D) 725 W
Correct Answer: B
Solution :
\[{{V}_{ms}}=220\,\,V\] \[{{i}_{rms}}\,=\frac{{{V}_{rms}}}{Z}\,=\frac{220}{44}=5A\] \[\cos \phi \,=\frac{R}{Z}\,=\frac{22}{44}\,=\frac{1}{2}\] \[<P>\,={{V}_{rms}}\,{{i}_{ms}}\,\cos \phi \,=(220)\,(5)\frac{1}{2}\] = 550W.You need to login to perform this action.
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