Q. No.A series R-C circuit is connected to an alternating voltage source. Consider two situations
Current passing through the resistor is \(I\) and voltage drop on capacitor is \(V\). Then:
| (A) | When the capacitor is air filled. |
| (B) | When the capacitor is mica filled. |
| 1. | \(V_A>V_B\) |
| 2. | \(V_A<V_B\) |
| 3. | \(V_A=V_B\) |
| 4. | it can't be predicted. |
Subtopic: Â Different Types of AC Circuits |
 71%
Level 2: 60%+
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The graph representing the variation of current \(i\) in an \(LCR\) series circuit for the frequency \(f\) of the applied AC source is best depicted by:
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Subtopic: Â Different Types of AC Circuits |
 60%
Level 2: 60%+
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Choose the correct statements regarding a series LCR circuit.
| 1. | The voltage across the capacitor lags behind the current. |
| 2. | The voltage across the inductor leads the current. |
| 3. | The voltage across the resistance \(R\) is in phase with the current. |
| 4. | All of the above. |
Subtopic: Â Different Types of AC Circuits |
 90%
Level 1: 80%+
Hints
An AC supply is connected across a series \(LCR\) circuit. If the capacitor is removed, then which of the following phasor diagram may be correct for the remaining circuit?
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Subtopic: Â Different Types of AC Circuits |
Level 3: 35%-60%
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | A glowing bulb becomes dim when an iron bar is put in the inductor in series LR ac circuit. |
| Reason (R): | Resistance of circuit increases. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Different Types of AC Circuits |
Level 3: 35%-60%
Hints
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 |
 72%
Level 2: 60%+
NEET - 2022
Hints
A series \(R, L,\) and \(C\) circuit is shown here. The source frequency \(f\) is varied, but the current is kept unchanged. Which of the curves shows changes of \(V_C\) and \(V_L\) with frequency that would be valid for the circuit under consideration?
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4. |  |
Subtopic: Â Different Types of AC Circuits |
 75%
Level 2: 60%+
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | Power loss in the Admin ideal choke coil is zero. |
| Reason (R): | Ideal choke coil has zero resistance. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Different Types of AC Circuits |
 79%
Level 2: 60%+
Hints
Given below are two statements:
| Assertion (A): | A capacitor can replace the choke coils in an AC circuit. |
| Reason (R): | A capacitor can reduce the current in an AC circuit like an inductor |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Different Types of AC Circuits |
Level 3: 35%-60%
Hints
In a purely resistive AC circuit, which of the following sketches represents the variation of the current amplitude \(I_0\) with the frequency \({\omega}?\)
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4. |  |
Subtopic: Â Different Types of AC Circuits |
 66%
Level 2: 60%+
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