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  • Given below are two statements: Statements I : When the frequency of an a.c source in a series LCR circuit increases, the current in the circuit first increases, attains

Given below are two statements:

Statements 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

Statements II : In a series LCR circuit, the value of power factor at resonance is one.

In the light of given statements, choose the most appropriate answer from the options given below.

Option: 1

Statement I is correct but Statement II is false.


Option: 2

Both Statement I and Statement II are true.


Option: 3

Statement I is incorrect but Statement II is true.


Option: 4

Both Statement I and Statement II are false.


Answers (1)

best_answer

(i) At resonance frequency power factor of RLC circuit is one

(ii) Graph of RLC circuit is:

At

\begin{aligned} & \omega=\omega_{\mathrm{R}} \\ & Z=R \\ & \quad \cos \phi=\frac{R}{Z}=1 \end{aligned}                              

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Ritika Jonwal

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