Given below are two statements: Statement I: When the frequency of an a.c. source in a series LCR circuit increases, the current in the circuit first increases, attains a maximum value and then decreases. Statement II: In a series LCR circuit, the value of power factor at resonance is one. choose the most appropriate answer from the options given below:

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YESPYQ · Accepted Answer

Correct answer: d) Both statement-I and statement-II are correct.. In the series of RLC circuit – At resonance, XL = XC Impedance is minimum so the current will be maximum, from the figure if f is increase the impedance also increase then current decrease, so statement (I) is correct. In RLC circuit at resonance, XL = XC So, the circuit behaves as pure resistive circuit the power factor will be unit so statement II is also correct.

Given below are two statements: Statement I: When the frequency of an a.c. source in a series LCR circuit increases, the…

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