An inductor of \(20~\text{mH}\), a capacitor of \(100~\mu \text{F}\), and a resistor of \(50~\Omega\) are connected in series across a source of emf, \(V=10 \sin (314 t)\). What is the power loss in this circuit?
1. \( 0.79 ~\text{W} \)
2. \( 0.43 ~\text{W} \)
3. \( 2.74 ~\text{W} \)
4. \( 1.13 ~\text{W}\)

Subtopic:  Power factor |
 54%
From NCERT
NEET - 2018
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The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an L-C-R circuit. What is the power factor of this circuit?

1. 0.4             

2. 0.5

3. 0.8             

4. 1.0

Subtopic:  Power factor |
 81%
From NCERT
NEET - 2016
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A 100 Ω resistance and a capacitor of 100 Ω reactance are connected in series across a 220 V source. When the capacitor is 50% charged, the peak value of the displacement current is

(1) 2.2 A             

(2) 11A

(3) 4.4A               

(4) 112A

Subtopic:  Different Types of AC Circuits |
 56%
From NCERT
NEET - 2016
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A small-signal voltage V(t)=Vo sinωt is applied across an ideal capacitor C 
(1) over a full cycle, the capacitor C does not consume any energy from the voltage source

(2) current I(t) is in phase with voltage V(t)

(3) current I(t) leads voltage V(t) by 180°

(4) current I(t) lags voltage V(t) by 90°

Subtopic:  Different Types of AC Circuits |
 69%
From NCERT
NEET - 2016
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Which of the following combinations should be selected for better tuning of an \(LCR\) circuit used for communication?
1. \(R=20~\Omega ,~L=1.5~H,~C=35~\mu F\)
2. \(R=25~\Omega ,~L=2.5~H,~C=45~\mu F\)
3. \(R=15~\Omega ,~L=3.5~H,~C=30~\mu F\)
4. \(R=25~\Omega ,~L=1.5~H,~C=45~\mu F\)

Subtopic:  Different Types of AC Circuits |
 72%
From NCERT
NEET - 2016
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A small-signal voltage \(V(t)= V_0 \text{sin}(\omega t)\) is applied across an ideal capacitor \(C\): Find the correct statement from the options given below:
1. over a full cycle, the capacitor \(C\) does not consume any energy from the voltage source.
2. current \(I(t)\) is in phase with voltage \(V(t)\).
3. current \(I(t)\) leads voltage \(V(t)\) by \(180^{\circ}\).
4. current \(I(t)\), lags voltage \(V(t)\) by \(90^{\circ}\).
Subtopic:  Power factor |
 73%
From NCERT
NEET - 2016
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An inductor \(20~\text{mH}\), a capacitor \(50~\mu \text{F}\), and a resistor \(40~\Omega\) are connected in series across a source of emf \(V= 10\text{sin}340t\). The power loss in the AC circuit is:
1. \(0.67~\text{W}\)
2. \(0.76~\text{W}\)
3. \(0.89~\text{W}\)
4. \(0.51~\text{W}\)
Subtopic:  Power factor |
From NCERT
NEET - 2016
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NEET 2023 - Target Batch - Aryan Raj Singh