A) 2000 W
B) 2200 W
C) 2400 W
D) 2500 W
Correct Answer: B
Solution :
(b) 2200 W When the frequency of the supply equals to the natural frequency of circuit, resonance occurs. \[\therefore Z=R=22\,\Omega \] and \[{{l}_{rms}}=\frac{{{V}_{rms}}}{Z}=\frac{220}{22}=10\,A\] Average power transferred per cycle, \[P={{V}_{rms}}{{l}_{rms}}\cos \,0{}^\circ =220\times 10\times 1=2200\,W\]You need to login to perform this action.
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