JEE Main 2023 (Online) 30th January Evening Shift | Alternating Current Question 44 | Physics

In the given circuit, rms value of current $\left(I_{\mathrm{rms}}\right)$ through the resistor $R$ is:

JEE Main 2023 (Online) 30th January Evening Shift Physics - Alternating Current Question 45 English

JEE Main 2023 (Online) 30th January Evening Shift Physics - Alternating Current Question 45 English

$ 2 \sqrt{2} \mathrm{~A}$

$2 \mathrm{~A}$

$\frac{1}{2} \mathrm{~A}$

$20 \mathrm{~A}$

JEE Main 2023 (Online) 30th January Morning Shift

MCQ (Single Correct Answer)

-1

In a series LR circuit with $$\mathrm{X_L=R}$$, power factor P₁. If a capacitor of capacitance C with $$\mathrm{X_C=X_L}$$ is added to the circuit the power factor becomes P₂. The ratio of P₁ to P₂ will be :

1 : $$\sqrt2$$

1 : 3

1 : 2

1 : 1

JEE Main 2023 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

-1

For the given figures, choose the correct options :

JEE Main 2023 (Online) 29th January Evening Shift Physics - Alternating Current Question 42 English

The rms current in circuit (b) can be larger than that in (a)

The rms current in figure (a) is always equal to that in figure (b)

The rms current in circuit (b) can never be larger than that in (a)

At resonance, current in (b) is less than that in (a)

JEE Main 2023 (Online) 25th January Morning Shift

MCQ (Single Correct Answer)

-1

In an LC oscillator, if values of inductance and capacitance become twice and eight times, respectively, then the resonant frequency of oscillator becomes $$x$$ times its initial resonant frequency $$\omega_0$$. The value of $$x$$ is :

1/4

1/16

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