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Physics - Alternating Current

Practise 65 NEET previous year questions on Alternating Current, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Alternating Current has been asked in 24 of the 39 years of NEET papers analysed (1988–2026), with 65 questions in all. 45% of them were easy, 42% moderate and 14% tough. Most of its questions came from 2023, with 8 questions that year. In the last three years (2024–2026) it had 9 questions across 13 papers, about 0.7 per paper.

The chapter's 4 topics are not weighted equally: AC Circuits (36 questions, 55%), Alternating Current, Voltage and Power (14 questions, 22%), and Transformers (10 questions, 15%) have been asked the most. AC Circuits has also led over the last five years, with 14 questions. AC Circuits has produced the most tough questions (5).

  1. 1An ac circuit contains a resistance of k , a capacitor of and an inductor of mH connected in series. The resonance frequency of the circuit 2026 (Cancelled)AC Circuits
  2. 2The peak value of an alternating current is A and frequency is Hz. How long will the current, starting from zero, take to reach the peak val2026 (Cancelled)Alternating Current, Voltage and Power
  3. 3An ac voltage Volt is applied to a series LCR circuit. Then the current amplitude in this circuit is : (Given : mH, F, )2026 (Re-NEET)AC Circuits
  4. 4To an ac power supply of 220 V at 50 Hz , a resistor of , a capacitor of reactance and an inductor of reactance are connected is series. The2025AC Circuits
  5. 5In an ideal transformer, the turns ratio is . The ratio is equal to (the symbols carry their usual meaning) :2024Transformers
  6. 6A capacitor is connected to a source as shown in figure. The peak current in the circuit is nearly :2024Alternating Current, Voltage and Power
  7. 7In the circuit shown below, the inductance is connected to an ac source. The current flowing in the circuit is . The voltage drop across is2024 (Re-NEET)AC Circuits
  8. 8A step up transformer is connected to an ac mains supply of 220 V to operate at watt. The current in the secondary circuit, ignoring the pow2024 (Re-NEET)Transformers
  9. 9The amplitude of the charge oscillating in a circuit decreases exponentially as , where is the charge at . The time at which charge amplitud2024 (Re-NEET)AC Circuits
  10. 10A 12 V , 60 W lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of 220 V . Assuming the 2023 (All India)Transformers
  11. 11In a series L C R circuit, the inductance L is 10 mH , capacitance C is 1 F and resistance R is 100 . The frequency at which resonance occur2023 (All India)AC Circuits
  12. 12An ac source is connected to a capacitor C . Due to decrease in its operating frequency:2023 (All India)AC Circuits
  13. 13The net impedance of circuit (as shown in figure) will be:2023 (All India)AC Circuits
  14. 14If and are the impedances of the given circuits (a) and (b) as shown in figures, then choose the correct option.2023 (Manipur)AC Circuits
  15. 15The maximum power is dissipated for an ac in a/an2023 (Manipur)Quality and Power Factor
  16. 16An ac source is connected in the given circuit. The value of will be2023 (Manipur)AC Circuits
  17. 17For very high frequencies, the effective impedance of the circuit (shown in the figure) will be2023 (Manipur)AC Circuits
  18. 18The peak voltage of the ac source is equal to2022 (Phase 1)Alternating Current, Voltage and Power
  19. 19A series LCR circuit with inductance 10 H , capacitance 10 F , resistance 50 is connected to an AC source of voltage, V = 200 sin 100 t volt2022 (Phase 1)AC Circuits
  20. 20Given below are two statements: Statement-I: In an a.c. circuit, the current through a capacitor leads the voltage across it. Statement-II: 2022 (Phase 2)AC Circuits
  21. 21An inductor of inductance is connected to a a.c. source. Let inductive reactance in the circuit is . If a d.c. source replaces the a.c. sour2022 (Phase 2)AC Circuits
  22. 22A standard filament lamp consumes when connected to a.c. mains supply. The peak current through the bulb will be :2022 (Phase 2)Alternating Current, Voltage and Power
  23. 23An inductor of inductance L , a capacitor of capacitance C and a resistor of resistance R are connected in series to an ac source of potenti2021AC Circuits
  24. 24A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V , 44 W lamp. Ignoring power losses in the transf2021Transformers
  25. 25A series L - C - R circuit containing 5 . 0 H inductor, 80 F capacitor and 40 resistor is connected to 230 V variable frequency ac source. T2021AC Circuits
  26. 26A series L C R circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and vo2020 (Phase 1)Quality and Power Factor
  27. 27A 40 F capacitor is connected to a 200 V , 50 Hz AC supply. The rms value of the current in the circuit is, nearly:2020 (Phase 1)AC Circuits
  28. 28A light bulb and an inductor coil are connected to an ac source through a key as shown in the figure below. The key is closed and after some2020 (Phase 2)AC Circuits
  29. 29Which of the following acts as a circuit protective device?2019 (All India)Alternating Current, Voltage and Power
  30. 30A circuit when connected to an AC source of gives a current of . The same circuit when connected to a DC source of , gives a current of . Th2019 (Odisha)AC Circuits
  31. 31An inductor 20 mH, capacitor 100 F and a resistor 50 are connected in series across a source of emf, V = 10 sin ( 314 t ) . The power loss i2018AC Circuits
  32. 32The magnetic potential energy stored in a certain inductor is 25 mJ , when the current in the inductor is 60 mA . This inductor is of induct2018AC Circuits
  33. 33Figure shows a circuit contains three identical resistors with resistance R = 9.0 each, two identical inductors with inductance L = 2.0 mH e2017AC Circuits
  34. 34An inductor 20 mH , a capacitor 50 F and a resistor 40 are connected in series across a source of emf V = 10 sin 340 t . The power loss in A2016 (Phase 1)Alternating Current, Voltage and Power
  35. 35A small signal voltage V t = V 0 sin t is applied across an ideal capacitor C :2016 (Phase 1)AC Circuits
  36. 36Which of the following combinations should be selected for better tuning of an LCR circuit used for communication?2016 (Phase 2)AC Circuits
  37. 37The potential differences across the resistance, capacitance, and inductance are 80 V , 40 V and 100 V , respectively in an LCR circuit. The2016 (Phase 2)Quality and Power Factor
  38. 38A 100 resistance and a capacitor of 100 reactance are connected in series across a 220 V source. When the capacitor is 50 % charged, the pea2016 (Phase 2)AC Circuits
  39. 39A resistance R draws power P when connected to an AC source. If an inductance is now placed in series with the resistance, such that the imp2015 (Phase 1)AC Circuits
  40. 40A series R-C circuit is connected to an alternating voltage source. Consider two situations: a. When capacitor is air filled. b. When capaci2015 (Phase 2)AC Circuits
  41. 41A transformer having efficiency of 90 % is working on 200 V and 3 k W power supply. If the current in the secondary coil is 6 A the voltage 2014Transformers
  42. 42A coil of self-inductance is connected in series with a bulb and an source. Brightness of the bulb decreases when2013 (All India)AC Circuits
  43. 43The primary winding of transformer when connected to a battery of 10 Volt draws a current of . The number of turns of the primary and second2013 (Karnataka)Transformers
  44. 44The instantaneous values of alternating current and voltages in a circuit are given as The average power in Watts consumed in the circuit is2012 (Mains)Alternating Current, Voltage and Power
  45. 45The current in the inductance is varying with time according to the plot shown in figure. Which one of the following is the correct variatio2012 (Screening)Alternating Current, Voltage and Power
  46. 46In an electrical circuit and an voltage source are all connected in series. When is removed from the circuit, the phase difference between t2012 (Screening)Quality and Power Factor
  47. 47The rms value of potential difference shown in the figure is2011 (Mains)Alternating Current, Voltage and Power
  48. 48A coil has resistance and inductive reactance at frequency. If an source of , is connected across the coil, the current in the coil will be2011 (Mains)AC Circuits
  49. 49In an circuit an alternating voltage volt is connected to a capacitor of capacity . The rms value of the current in the circuit is2011 (Screening)Alternating Current, Voltage and Power
  50. 50An AC voltage is applied to a resistance and an inductor in series. If and the inductive reactance are both equal to , the phase difference 2011 (Screening)AC Circuits

Frequently Asked Questions

1.How many questions are available for Alternating Current?

This chapter includes 65 questions compiled from NEET papers spanning 2002 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Alternating Current chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Alternating Current an important chapter for NEET Physics?

Alternating Current has appeared in 24 of the 25 years of NEET papers covered here, with 65 questions across 37 papers - about 2 per paper it appears in.

4.What is the difficulty level of Alternating Current questions in NEET?

Of the 65 questions analysed for this chapter, 45% are easy, 42% moderate and 14% tough. 2023 had the most, with 8 questions.

5.Which topics in Alternating Current should I focus on?

These topics have carried the most weightage in Alternating Current:

  • AC Circuits - 36 questions (55%)
  • Alternating Current, Voltage and Power - 14 questions (22%)
  • Transformers - 10 questions (15%)
  • AC Circuits has produced the most tough questions (5).
6.Is Alternating Current's weightage in NEET going up or down?

Across all 37 papers analysed, Alternating Current has averaged about 1.8 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.