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Q. No.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 |
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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 |
 61%
From NCERT
NEET - 2023
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The maximum power is dissipated for an AC in a/an:
| 1. | resistive circuit | 2. | \({LC}\) circuit |
| 3. | inductive circuit | 4. | capacitive circuit |
Subtopic: Â Power factor |
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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
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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 |
 61%
From NCERT
NEET - 2023
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A \(12~\text{V},60~\text{W}\) lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of \(220~\text{V}\). Assuming the transformer to be ideal, what is the current in the primary winding?
1. \(0.37 ~\mathrm{A}\)
2. \(0.27 ~\mathrm{A}\)
3. \(2.7 ~\mathrm{A}\)
4. \(3.7 ~\mathrm{A}\)
1. \(0.37 ~\mathrm{A}\)
2. \(0.27 ~\mathrm{A}\)
3. \(2.7 ~\mathrm{A}\)
4. \(3.7 ~\mathrm{A}\)
Subtopic: Â Transformer |
 68%
From NCERT
NEET - 2023
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The primary of a transformer when connected to the DC battery of \(10\) Volt draws a current of \(1~\mathrm{mA}\). The number of turns of the primary and secondary windings are \(50\) and \(100\) respectively. The voltage in the secondary and the current drawn by the circuit in the secondary are respectively:
| 1. | \(20~\mathrm{V}\) and \(2.0~\mathrm{mA}\) |
| 2. | \(10~\mathrm{V}\) and \(0.5~\mathrm{mA}\) |
| 3. | zero and therefore no current |
| 4. | \(20~\mathrm{V}\) and \(0.5~\mathrm{mA}\) |
Subtopic: Â Transformer |
From NCERT
NEET - 2013
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A standard filament lamp consumes \(100\) W when connected to \(200\) V AC mains supply. The peak current through the bulb will be:
1. \(0.707\) A
2. \(1\) A
3. \(1.414\) A
4. \(2\) A
1. \(0.707\) A
2. \(1\) A
3. \(1.414\) A
4. \(2\) A
Subtopic: Â RMS & Average Values |
 70%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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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: | 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 |
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From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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Two circuits: \((1)\) an \(L\text-R\) circuit and \((2)\) an \(R\text-C\) circuit are driven by the same alternating current. The phase difference between the current and the voltage is twice in the \(1\)st case with respect to the \(2\)nd case and both the angles add up to \(90^\circ.\) The resistances are equal in both cases. The ratio of their reactances (first: second) is:
1. \(\sqrt3:1\)
2. \(1:\sqrt3\)
3. \(3:1\)
4. \(2:1\)
1. \(\sqrt3:1\)
2. \(1:\sqrt3\)
3. \(3:1\)
4. \(2:1\)
Subtopic: Â Different Types of AC Circuits |
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From NCERT
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