A) zero
B) \[{{P}_{rms}}\]\[{{I}_{rms}}\]
C) infinite
D) none of these
Correct Answer: B
Solution :
The average power of an A.C. circuit \[{{P}_{a\upsilon }}+{{V}_{rms}}\times {{I}_{rms}}\times \cos \,\phi \] If only resistor is connected to A.C. circuit, then\[\phi =0{}^\circ \] \[\therefore \] \[\cos \,\phi \,=\cos \,0{}^\circ =1\] \[\therefore \] \[{{P}_{a\upsilon }}\,={{V}_{rms}}\,{{I}_{rms}}\]
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