Alternating Current PYQs - Last 5 Years
NEET / Physics / Electricity / 23 recent questions
PhysicsElectricity2022-2026
Practice 23 NEET Physics questions from Alternating Current. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2022-2026
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Last 5 Years Alternating Current Questions
Showing 23 of 23 filtered questions.
1Alternating Current
An ac voltage $V=220 \sin \left(2 \times 10^3 t\right)$ Volt is applied to a series LCR circuit. Then the current amplitude in this circuit is:
(Given : $L=10 \mathrm{mH}, C=25 \mu \mathrm{~F}, R=100 \Omega$ )
(Given : $L=10 \mathrm{mH}, C=25 \mu \mathrm{~F}, R=100 \Omega$ )
MCQ+4 / -12026
2Alternating Current
The peak value of an alternating current is 5 A and frequency is 60 Hz . How long will the current, starting from zero, take to reach the peak value?
MCQ+4 / -12026
3Alternating Current
An ac circuit contains a resistance of $1 \mathrm{k} \Omega$, a capacitor of $0.1 \mu \mathrm{~F}$ and an inductor of 1 mH connected in series. The resonance frequency of the circuit is approximately:
MCQ+4 / -12026
4Alternating Current
To an ac power supply of 220 V at 50 Hz , a resistor of $20 \Omega$, a capacitor of reactance $25 \Omega$ and an inductor of reactance $45 \Omega$ are connected in series. The corresponding current in the circuit and the phase angle between...
MCQ+4 / -12025
5Alternating Current
In the circuit shown below, the inductance \(L\) is connected to an ac source. The current flowing in the circuit is \(I=I_0 \sin \omega t\). The voltage drop \(\left(V_L\right)\) across \(L\) is
MCQ+4 / -12024
6Alternating Current
The amplitude of the charge oscillating in a circuit decreases exponentially as \(Q=Q_0 e^{-R t/2 L}\), where \(Q_0\) is the charge at \(t=0 \mathrm{~s}\). The time at which charge amplitude decreases to \(0.50 Q_0\) is nearly:
[Given that ...
[Given that ...
MCQ+4 / -12024
7Alternating Current
A step up transformer is connected to an ac mains supply of \(220 \mathrm{~V}\) to operate at \(11000 \mathrm{~V}, 88\) watt. The current in the secondary circuit, ignoring the power loss in the transformer, is
MCQ+4 / -12024
8Alternating Current
A \(10 \mu \mathrm{F}\) capacitor is connected to a \(210 \mathrm{~V}, 50 \mathrm{~Hz}\) source as shown in figure. The peak current in the circuit is nearly \((\pi=3.14)\) :
MCQ+4 / -12024
9Alternating Current
In an ideal transformer, the turns ratio is \(\frac{N_P}{N_S}=\frac{1}{2}\). The ratio \(V_S: V_P\) is equal to (the symbols carry their usual meaning) :
MCQ+4 / -12024
10Alternating Current
For very high frequencies, the effective impedance of the circuit (shown in the figure) will be:-
MCQ+4 / -12023
11Alternating Current
The maximum power is dissipated for an ac in a/an:
MCQ+4 / -12023
12Alternating Current
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
MCQ+4 / -12023
13Alternating Current
An ac source is connected in the given circuit. The value of $\phi$ will be :
MCQ+4 / -12023
14Alternating Current
The net impedance of circuit (as shown in figure) will be :
MCQ+4 / -12023
15Alternating Current
The magnetic energy stored in an inductor of inductance \(4 ~\mu \mathrm{H}\) carrying a current of \(2 \mathrm{~A}\) is :
MCQ+4 / -12023
16Alternating Current
An ac source is connected to a capacitor C. Due to decrease in its operating frequency
MCQ+4 / -12023
17Alternating Current
A \(12 \mathrm{~V}, 60 \mathrm{~W}\) lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of \(220 \mathrm{~V}\). Assuming the transformer to be ideal, what is the current in the primary wind...
MCQ+4 / -12023
18Alternating Current
In a series LCR circuit, the inductance \(L\) is \(10 ~\mathrm{mH}\), capacitance \(C\) is \(1 ~\mu \mathrm{F}\) and resistance \(R\) is \(100 ~\Omega\). The frequency at which resonance occurs is :-
MCQ+4 / -12023
19Alternating Current
A standard filament lamp consumes 100 W when connected to 200 V ac mains supply. The peak current through the bulb will be :
MCQ+4 / -12022
20Alternating Current
An inductor of inductance 2 mH is connected to a 220 V, 50 Hz ac source. Let the inductive reactance in the circuit is X1. If a 220 V dc source replace the ac source in the circuit, then the inductive reactance in the circuit is X2. X1 and ...
MCQ+4 / -12022
21Alternating Current
Given below are two statements
Statement I : In an a.c circuit, the current through a capacitor leads the voltage across it.
Statement II : In a.c circuit containing pure capacitance only, the phase difference between the current and voltag...
Statement I : In an a.c circuit, the current through a capacitor leads the voltage across it.
Statement II : In a.c circuit containing pure capacitance only, the phase difference between the current and voltag...
MCQ+4 / -12022
22Alternating Current
A series LCR circuit with inductance 10 H, capacitance 10 \(\mu\)F, resistance 50 \(\Omega\) is connected to an ac source of voltage, V = 200sin(100t) volt. If the resonant frequency of the LCR circuit is v0 and the frequency of the ac sour...
MCQ+4 / -12022
23Alternating Current
The peak voltage of the ac source is equal to
MCQ+4 / -12022
