An ac source is connected to a capacitor $$C$$. Due to decrease in its operating frequency:
 1 capacitive reactance remains constant 2 capacitive reactance decreases. 3 displacement current increases. 4 displacement current decreases.
Subtopic: Â Different Types of AC Circuits |
From NCERT
NEET - 2023
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In a series $${LCR}$$ circuit, the inductance $${L}$$ is $$10~\text{mH}$$, capacitance $${C}$$ is $$1~\mu\text{F}$$ and resistance $${R}$$ is $$100~\Omega$$. The frequency at which resonance occurs is:
 1 $$1.59~\text{kHz}$$ 2 $$15.9~\text{rad/s}$$ 3 $$15.9~\text{kHz}$$ 4 $$1.59~\text{rad/s}$$
Subtopic: Â Different Types of AC Circuits |
Â 59%
From NCERT
NEET - 2023
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The net impedance of circuit (as shown in the figure) will be:

1. $$25~\Omega$$
2. $$10\sqrt{2}~\Omega$$
3. $$15~\Omega$$
4. $$5\sqrt{5}~\Omega$$

Subtopic: Â Different Types of AC Circuits |
Â 57%
From NCERT
NEET - 2023
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An AC source is connected to the given circuit. The value of $$\phi$$ will be:

 1 $$60^\circ$$ 2 $$90^\circ$$ 3 $$30^\circ$$ 4 $$45^\circ$$
Subtopic: Â Different Types of AC Circuits |
Â 64%
From NCERT
NEET - 2023
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If $$Z_1$$ and $$Z_2$$ are the impedances of the given circuits (a) and (b) as shown in figures, then choose the correct option:

 1 $$Z_1Z_2$$

Subtopic: Â Different Types of AC Circuits |
Â 61%
From NCERT
NEET - 2023
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For very high frequencies, the effective impedance of the circuit (shown in the figure) will be:

1. $$4~ \Omega$$
2. $$6~ \Omega$$
3. $$1~ \Omega$$
4. $$3~ \Omega$$
Subtopic: Â Different Types of AC Circuits |
From NCERT
NEET - 2023
Hints

A series $$LCR$$ circuit with inductance $$10~\mathrm{H}$$, capacitance $$10~\mu F$$, resistance $$50~\Omega$$ is connected to an AC source of voltage, $$V=200 \sin (100 t) \text { volt }$$. If the resonant frequency of the $$LCR$$ circuit is $$\nu_0$$ and the frequency of the AC source is $$\nu$$, then:

 1 $$\nu=100 \mathrm{~Hz} ; ~\nu_0=\frac{100}{\pi} \mathrm{~Hz}$$ 2 $$\nu_0=\nu=50 \mathrm{~Hz}$$ 3 $$\nu_0=\nu=\frac{50}{\pi} \mathrm{Hz}$$ 4 $$\nu_{0}=\frac{50}{\pi}~ \mathrm{Hz}, \nu=50 \mathrm{~Hz}$$
Subtopic: Â Different Types of AC Circuits |
Â 70%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Given below are two statements:
 Statement I: In an AC circuit, the current through a capacitor leads the voltage across it. Statement II: In AC circuits containing pure capacitance only, the phase difference between the current and the voltage is $$\pi.$$

 1 Both Statement I and Statement II are correct. 2 Both Statement I and Statement II are incorrect. 3 Statement I is correct but Statement II is incorrect. 4 Statement I is incorrect but Statement II is correct.
Subtopic: Â Different Types of AC Circuits |
Â 66%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

An inductor of inductance $$2~\text{mH}$$ is connected to a $$220~\text{V}$$, $$50~\text{Hz}$$ ac source. Let the inductive reactance in the circuit is $$X_1$$. If a $$220~\text{V}$$ DC source replaces the AC source in the circuit, then the inductive reactance in the circuit is $$X_2$$. $$X_1$$ and $$X_2$$, respectively, are:
1. $$6.28~\Omega$$, zero
2. $$6.28~\Omega$$, infinity
3. $$0.628~\Omega$$, zero
4. $$0.628~\Omega$$, infinity
Subtopic: Â Different Types of AC Circuits |
Â 65%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

An inductor of inductance $$L$$, a capacitor of capacitance $$C$$ and a resistor of resistance $$R$$ are connected in series to an AC source of potential difference $$V$$ volts as shown in Figure. The potential difference across $$L$$, $$C$$ and $$R$$ is $$40~\text{V}$$, $$10~\text{V}$$ and $$40~\text{V}$$, respectively. The amplitude of the current flowing through the $$LCR$$ series circuit is $$10\sqrt{2}~\text{A}$$. The impedance of the circuit will be:

1. $$4~\Omega$$
2. $$5~\Omega$$
3. $$4\sqrt{2}~\Omega$$
4. $$\frac{5}{\sqrt{2}}~\Omega$$

Subtopic: Â Different Types of AC Circuits |
From NCERT
NEET - 2021
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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