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Physics - Alternating Current

Practise 117 NEET NTA questions on Alternating Current. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Alternating Current has been asked in 0 of the 38 years of NEET NTA papers analysed (1988–2025), with 117 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2025, with 0 questions that year. In the last three years (2023–2025) it had 0 questions across 6 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1If the voltage in the primary coil of a step-up transformer with a transformation ratio 3 : 2 is 30 V , then the voltage in the secondary co
  2. 2A step-down transformer is used on a 1000 V line to deliver 20 A at 120 V at the secondary coil. If the efficiency of the transformer is 80
  3. 3In a series L C R circuit, the voltage across resistance, capacitance and inductance is 10 V each. If the capacitor is removed, the voltage
  4. 4A 100 V , AC source of frequency 500 Hz is connected to an LCR circuit with L = 8 . 1 mH , C = 12.5 µ F , R = 10 Ω all connected in series a
  5. 5The current in an L C R circuit is given by I = 20 sin ⁡ 100 π t + π 3 A . The voltage across the inductance L of 0 .1 H at t = 0 will be
  6. 6In the circuit shown in the figure, a conducting wire HE is moved with a constant speed v towards left. The complete circuit is placed in a
  7. 7If the current through an inductor of 2 H is given by I = t sin t A , then the voltage across the inductor is
  8. 8In a series L C R circuit, resistance R = 10 Ω and the impedance Z = 10 Ω . The phase difference between the current and the voltage is
  9. 9The time required for a 50 H z alternating current to increase from 0 to 70 . 7 % of its peak value is
  10. 10The maximum voltage in DC circuit is 282 V . The effective voltage in AC circuit will be
  11. 11In a series resonant LCR circuit, the voltage across R is 100 V and R = 1 k Ω with C = 2 μ F . The resonant frequency ω is 200 rad s - 1 . A
  12. 12The figure shows three circuits with identical batteries, inductors and resistances. Rank the circuits in decreasing order, according to the
  13. 13An A.C. source of voltage V = 100 sin ( 100 πt ) is connected to a resistor of resistance 20 Ω . The rms value of current through resistor i
  14. 14A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The output pow
  15. 15In a series L C R A C circuit, the current is maximum when the impedance is equal to
  16. 16The peak voltage in a 220 V AC source is
  17. 17For a series L - C - R circuit at resonance, the statement which is not true is
  18. 18In the adjacent circuit, the instantaneous current equation is
  19. 19The frequency of oscillation of current in the inductor is-
  20. 20A charged capacitor C = 30 μF is connected to an inductor L = 27 mH , then the angular frequency of the system is
  21. 21For an ideal step-down transformer, the quantity which is constant for both the coils is
  22. 22In the series L - C - R circuit shown in the figure, the rms voltage across the resistor and inductor are 400 V and 700 V respectively. If t
  23. 23At the moment t = 0 , when the charge on the capacitor C 1 is zero, the switch is closed. If I 0 be the current through inductor at t = 0 ,
  24. 24If resistance R = 100 Ω , inductance L = 2 π H and capacitance C = 8 π μF are connected in series with an AC source of 200 volt and frequenc
  25. 25A uniformly wound solenoid coil of self-inductance 1.8 × 10 - 4 H and resistance 6 Ω is broken up into two identical coils. These identical
  26. 26A transformer is used to light 140 W , 24 V lamp from 240 V AC mains. The current in the main cable is 0 . 7 A . The efficiency of the trans
  27. 27If the coils of a transformer are made up of thick wire, then
  28. 28A transformer of frequency 60 Hz and 120 V input has 8 : 1 turn ratio. The frequency of the output is
  29. 29An A.C. source is connected to a resistive circuit. Which of the following is true?
  30. 30A transformer of efficiency 90 % has turns ratio 10 : 1 . If the voltage across the primary is 220 V and current in the primary is 0.5 A , t
  31. 31The value of inductance L for which the current is maximum in series LCR circuit with C = 10 μF and ω = 1000 rad s - 1 .
  32. 32Average power in the LCR circuit depends upon
  33. 33An ac source of angular frequency ω is fed across a resistor r and a capacitor C in series. The current registered is I . If now the frequen
  34. 34A coil has self inductance L = 0 . 04 H and resistance R = 12 Ω . When it is connected to 220 V , 50 Hz supply; what will be the current flo
  35. 35A solenoid has an inductance of 50 m H and a resistance of 0.025 Ω . If it is connected to a battery, how long will it take for the current
  36. 36A 20 V AC is applied to a circuit consisting of a resistance and a coil with negligible resistance. If the voltage across the resistance is
  37. 37In series R - L - C circuit, the root mean square voltage across the resistor and inductor are respectively 400 V and 700 V . If the equatio
  38. 38A 100 V AC source of frequency 500 Hz is connected to an LCR circuit with L = 8 .1 mH , C = 12 .5 F and R = 10 all connected in series as sh
  39. 39A coil having inductance L and resistance R is connected to a battery of emf ε at t = 0 . If t 1 and t 2 are the times for 90 % and 99 % com
  40. 40A 60 W , 120 V bulb is connected to a 240 V , 60 Hz supply with an inductance in series. Find the value of inductance so that bulb gets corr
  41. 41Find the steady-state current through L 1 in the figure
  42. 42In a series LCR circuit with an A C source R = 300 Ω , C = 20 μ F , L = 1 H , E r m s = 50 V and f = 50 π H z . The potential difference acr
  43. 43A transformer of efficiency 90 % has turns ratio 10 : 1 . If the voltage across the primary is 220 V and current in the primary is 0.5 A , t
  44. 44The instantaneous current and voltage of an AC circuit are given by i = 10 sin 314 t A and V = 100 sin 314 t V . What is the power dissipati
  45. 45A current of 5 A is flowing at 220 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2200 V and 50 %
  46. 46In an AC circuit, V and I are given by V = 150 sin ⁡ 150 t V and I = 150 sin ⁡ 150 t + π 3 A . The power dissipated in the circuit is
  47. 47A 100 V , AC source of frequency 500 H z is connected to an L C R circuit with L = 8.1 m H , C = 12.5 μ F , R = 10 Ω all connected in series
  48. 48A 100 V , A C source of frequency 500 H z is connected to an LCR circuit with L = 8.1 m H , C = 12.5 μ F , R = 10 Ω all connected in series
  49. 49At time t = 0 second, voltage of an A.C. Generator starts from 0V and becomes 2V at time t = 1 100 π second. The voltage keeps on increasing
  50. 50The capacitive reactance in an A.C. circuit is

Frequently Asked Questions

1.How many questions are available for Alternating Current?

This chapter includes 117 NEET NTA questions.

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

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

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

Of the 117 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2025 had the most, with 0 questions.

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

All of this chapter's questions come from a single topic: Uncategorized.