Questions
By what percent the impedance in an series LCR, AC circuit should be increased so that the power factor changes from (assume resistance R remains constant)
detailed solution
Correct option is B
cosϕ=RZ 12=RZ and 14=RZ1⇒R=Z2⇒14=Z2Z1⇒Z′=2Z % increase in z, z′−zz=100%Talk to our academic expert!
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An inductor of L = 1 H and capacitor of are connected in series with a resistor of The quality factor of the circuit is nearest to
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