Practice & Test Alternating Current

Class 12 Physics · Chapter 7. Practice 265 free NEET 2027 questions on Alternating Current (Class 12 Physics), across 19 concepts. Asked ~3.2× per paper since 2013.

265
Practice questions
19
Concepts tagged
41
Asked 2013–2025
3.2×
Per paper

How much does Alternating Current matter?

Across the 13 NEET papers from 2013 to 2025, Alternating Current has been examined 41 times — an average of 3.2 questions per paper. At 4 marks each, that is roughly 13 marks a year riding on this one chapter.

What gets asked: 19 concepts

Every question in the bank is tagged to one of these, so practice can target the exact idea you keep missing.

AC CircuitsAlternating CurrentsAverage, Peak and RMS Value of Alternating Current/VoltageCapacitive ReactanceCurrent Growth in L-R DC CircuitCurrent versus Frequency Graph for L-C-R Series CircuitElectromagnetic InductionGraph of Voltage and Current Versus ωt in Pure Inductive CircuitPeak and RMS Values of Alternating Current and VoltagePower in AC CircuitPower in AC Circuits and Wattless CurrentReactance and ImpedanceResonating CircuitSelf InductionSeries Combination of InductorsTime Constant in L-R DC CircuitTransformerTransformersVariation of Impedance in Series AC Circuit with AC Frequency

Sample questions

Question 1

In an L-C-R series circuit, the resonant frequency is $f_0$. If the inductance is doubled and capacitance is halved, the new resonant frequency will be:

Question 2

A series RLC circuit is connected to an AC source. The impedance of the circuit is given by $Z = \sqrt{R^2 + (X_L - X_C)^2}$. Describe the condition for resonance in this circuit. The diagram shows a series RLC circuit with a resistor R, an inductor L, and a capacitor C connected to an AC voltage source. The general phasor diagram for this circuit shows current I along the x-axis, $V_R$ along I, $V_L$ leading I by 90 degrees, and $V_C$ lagging I by 90 degrees.

Question 3

Average power in a L-C-R circuit depends upon

Start practicing Alternating Current now

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