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. \(5\sqrt{5}~\Omega\)

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. | \(Z_1<Z_2\) | 2. | \(Z_1+Z_2=20~\Omega\) |

3. | \(Z_1=Z_2\) | 4. | \(Z_1>Z_2\) |

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. \(3~ \Omega\)

1. \(4~ \Omega\)

2. \(6~ \Omega\)

3. \(1~ \Omega\)

4. \(3~ \Omega\)

Subtopic: Â Different Types of AC Circuits |

From NCERT

NEET - 2023

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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

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Given below are two statements:

Statement I: |
In an AC circuit, the current through a capacitor leads the voltage across it. |

Statement II: |
\(\pi.\) | In AC circuits containing pure capacitance only, the phase difference between the current and the voltage is

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

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NEET 2023 - Target Batch - Aryan Raj Singh

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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

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

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NEET 2023 - Target Batch - Aryan Raj Singh

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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

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NEET 2023 - Target Batch - Aryan Raj Singh

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