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Physics - Alternating Current

Practise 38 VITEEE previous year questions on Alternating Current, compiled from papers spanning 2006 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty VITEEE tests.

Alternating Current has been asked in 16 of the 18 years of VITEEE papers analysed (2006–2024), with 38 questions in all. 55% of them were easy, 24% moderate and 21% tough. Most of its questions came from 2023, with 6 questions that year. In the last three years (2022–2024) it had 9 questions across 2 papers, about 4.5 per paper.

The chapter's 4 topics are not weighted equally: AC Circuits (24 questions, 63%), Transformers (8 questions, 21%), and Alternating Current, Voltage and Power (5 questions, 13%) have been asked the most. Over the last five years the most frequent topics have been Transformers (4), AC Circuits (3), and Alternating Current, Voltage and Power (2). AC Circuits has produced the most tough questions (8).

  1. 1A transformer has 200 windings in the primary and 400 windings in the secondary. The primary is connected to an AC supply of 110 V and a cur2024Transformers
  2. 2Which of the following graphs represents the correct variation of inductive reactance with angular frequency ?2024AC Circuits
  3. 3The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at 1000 V is 12 kW . T2024Transformers
  4. 4In an A.C. circuit resistance \(R\), inductance \(L\) and capacitance \(C\) are in parallel. The value of \(R\) is \(50 \), inductive reacta2023Parallel AC Circuits
  5. 5The current \(i\) passed in any instrument in an A.C. circuit is \( {i}=2 {t}\) amp and potential difference applied is given by \( {V}=5 {t2023Alternating Current, Voltage and Power
  6. 6In A.C. circuit in which inductance and capacitance are joined in series. Current is found to be maximum when the value of inductance is \(02023AC Circuits
  7. 7In a series \(L C R\) circuit the frequency of a \(10 {~V}\) a.c. voltage source is adjusted in such a fashion that the reactance of the ind2023AC Circuits
  8. 8What direct current will produce the same amount of thermal energy in a resistance \(R=\) \(2 \) as an alternating current that a peak value2023Alternating Current, Voltage and Power
  9. 9A generator at a utility company produces \(100 {~A}\) of current at \(4000 {~V}\). The voltage is stepped up to \(2,40,000 {~V}\) by a tran2023Transformers
  10. 10A step-up transformer operates on a line and supplies a load of 2 ampere. The ratio of the primary and secondary windings is . The current i2021Transformers
  11. 11For a series RLC circuit . The impedance of the circuit and phase difference between and I respectively will be2019AC Circuits
  12. 12Two coils have a mutual inductance . The current changes in the first coil according to equation , where and radian . The maximum value of e2018AC Circuits
  13. 13An alternating voltage of frequency is applied across a capacitor of capacitance . The impedence of the circuit is2018AC Circuits
  14. 14In the given circuit the reading of voltmeter and are 300 volt each. The reading of the voltmeter and ammeter are respectively2018AC Circuits
  15. 15An alternating voltage of frequency is applied across a capacitor of capacitance 2 . The impedence of the circuit is2017AC Circuits
  16. 16An A.C. source is connected to a resistive circuit. Which of the following is true?2017AC Circuits
  17. 17Resonance frequency of LCR series a.c. circuit is . Now the capacitance is made 4 times, then the new resonance frequency will become2017AC Circuits
  18. 18If and , then is2016Alternating Current, Voltage and Power
  19. 19The equation of voltage is and the A.C. current is . The average power dissipated is2016Alternating Current, Voltage and Power
  20. 20The current graph for resonance in circuit is2015AC Circuits
  21. 21The value of inductance for which the current is maximum in series circuit with and2015AC Circuits
  22. 22An circuit contains and . The impedence of the circuit will be minimum for a frequency of2014AC Circuits
  23. 23In the adjoining circuit, if the reading of voltmeter and are 300 volts each, then the reading voltmeter and ammeter A are respectively2013AC Circuits
  24. 24A resistor , an inductor and capacitor are connected in series to an oscillator of frequency n. If the resonant frequency is , then the curr2012AC Circuits
  25. 25The turn ratio of transformers is given as If the current through the primary coil is , thus calculate the current through load resistance2012Transformers
  26. 26In an circuit, the potential across an inductance and resistance joined in series are respectively and . The total potential difference acro2012AC Circuits
  27. 27An inductive circuit contains a resistance of and an inductance of . Ifan voltage of and frequency of is applied to this circuit, the curren2011AC Circuits
  28. 28A coil of resistance and inductance is connected to a battery. Then the energy stored in the coil is2011AC Circuits
  29. 29The output voltage of a transfor mer connected to line is at 2 Acurrent. Itsefficiency is . The current coming from the line is2011Transformers
  30. 30A potential difference of is applied between the opposite faces of a Ge crystal plate of area and thickness . If the concentration of electr2010Transformers
  31. 31An AM wave has of total power content. For modulation the carrier should have power content equal to2010AC Circuits
  32. 32The following series circuit, when driven by an emf source of angular frequency 70 kilo-radians per second, the circuit effectively behaves 2009AC Circuits
  33. 33In Colpitt oscillator the feedback network consists of2008Transformers
  34. 34In nature, the electric charge of any system is always equal to2008AC Circuits
  35. 35RMS value of is _____ of the peak value.2006Alternating Current, Voltage and Power
  36. 36Q-factor can be increased by having a coil of2006AC Circuits
  37. 37A small piece of metal wire is dragged across the gap between the pole pieces of a magnet in second. The magnetic flux between the pole piec2006AC Circuits
  38. 38Current in the LCR circuit becomes extremely large when2006AC Circuits

Frequently Asked Questions

1.How many questions are available for Alternating Current?

This chapter includes 38 questions compiled from VITEEE papers spanning 2006 to 2024.

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

These are VITEEE questions specifically for the Alternating Current chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

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

Alternating Current has appeared in 16 of the 18 years of VITEEE papers covered here, with 38 questions across 16 papers - about 2 per paper it appears in.

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

Of the 38 questions analysed for this chapter, 55% are easy, 24% moderate and 21% tough. 2023 had the most, with 6 questions.

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

These topics have carried the most weightage in Alternating Current:

  • AC Circuits - 24 questions (63%)
  • Transformers - 8 questions (21%)
  • Alternating Current, Voltage and Power - 5 questions (13%)
  • AC Circuits has produced the most tough questions (8).
6.Is Alternating Current's weightage in VITEEE going up or down?

Across all 16 papers analysed, Alternating Current has averaged about 2.4 questions per paper. In the last three years (2022–2024), that average has risen, at about 4.5 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.