Select Chapter Topics: An inductor of $$20~\mathrm{mH}$$, a capacitor of $$100~\mathrm{\mu F}$$, 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. $$0.79 \mathrm{~W}$$
2. $$0.43 \mathrm{~W}$$
3. $$2.74 \mathrm{~W}$$
4. $$1.13 \mathrm{~W}$$  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 |
80%
From NCERT
NEET - 2016
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A 100 $\Omega$ resistance and a capacitor of 100 $\Omega$ 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) 11$\sqrt{2}$A  Subtopic:  Different Types of AC Circuits |
55%
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 L-C-R 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) = V0sin$\omega$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 l(t) is in phase with voltage V(t). 3 current l(t) leads voltage V(t) by 180°. 4 current l(t), lags voltage V(t) by 90o.  Subtopic:  RMS & Average Values | Different Types of AC Circuits |
72%
From NCERT
NEET - 2016
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An inductor 20mH, a capacitor 50$\mu$F, and a resistor 40$\Omega$ are connected in series across a source of emf V = 10sin340t. The power loss in the AC circuit is:
1. 0.67 W
2. 0.76 W
3. 0.89 W
4. 0.51 W  Subtopic:  Different Types of AC Circuits |
From NCERT
NEET - 2016
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Hints 