Question
Real power consumption in a circuit is least when it contains.
high R, low L
high R, high L
low R, high L
high R, low C
Solution
C.
low R, high L
Power is the voltage times the current
Power consumption = lrms Vrms cos
Where, cos is power factor.
For cos to be minimum, R should be minimum and Z should be higher. So, higher Z (impedance), L (inductance) should be high.
