Question

when when AC source is connected across series RLC combination maximum power loss will occur provided?
current and voltage are in phase
current from source is minimum
inductance is minimum
capacitance is maximum​

Answer 1

Answer:

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Explanation:

Phasor diagram is shown for a series LCR circuit.

Using definition of reactance,

Voltage across capacitor is VC=IXC=ωCI

Voltage across inductor is VL=IXL=IωL

Voltage across resistor is VR=IR

From definition of impedance, VS=IZ 

From the phasor diagram,

VS2=VR2+(VL−VC)2

(2Vm)2=I2(R2+(ωL−ωC1)2)

I=2(R2+(ωL−ωC1)2)Vm

Power dissipated in the circuit is:

P=I2R

P=2(R2+(ωL