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Physics - Alternating Current

Practise 55 TS EAMCET previous year questions on Alternating Current, compiled from papers spanning 2005 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty TS EAMCET tests.

Alternating Current has been asked in 17 of the 24 years of TS EAMCET papers analysed (2001–2024), with 55 questions in all. 55% of them were easy, 27% moderate and 18% tough. Most of its questions came from 2020, with 9 questions that year. In the last three years (2022–2024) it had 17 questions across 17 papers, about 1 per paper.

The chapter's 6 topics are not weighted equally: AC Circuits (31 questions, 56%), Alternating Current, Voltage and Power (12 questions, 22%), and Transformers (6 questions, 11%) 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 (8).

  1. 1The inductance L, Capacitance C and resistance R are the values of the components connected in series to an ac source of angular frequency .04 May, 2025 (M)AC Circuits
  2. 2The small energy losses in transformers due to eddy currents can be reduced by04 May, 2025 (E)Transformers
  3. 3An electric bulb, an open coil inductor, an ac source and a key are all connected in series to form a closed circuit. The key is closed and 03 May, 2025 (M)AC Circuits
  4. 4A capacitor and a resistor of resistance are connected in series to an ac source of voltage , where ' ' is time in second. If the phase diff03 May, 2025 (E)AC Circuits
  5. 5The frequency of an alternating voltage is 50 Hz. The time taken for instantaneous voltage to increase from zero to half of its peak voltage02 May, 2025 (M)Alternating Current, Voltage and Power
  6. 6An inductor and a resistor are connected in series to an ac supply. If the potential differences across the inductor and the resistor are 1802 May, 2025 (E)LCR Circuits
  7. 7An inductor and a resistor are connected in series to an ac source f 10 V . If the potential difference across the inductor is 6 V , then th11 May, 2024 (M)AC Circuits
  8. 8An inductor and a resistor are connected in series to an ac source f 10 V . If the potential difference across the inductor is 6 V , then th10 May, 2024 (M)AC Circuits
  9. 9An inductor of inductive reactance , a capacitor of capacitive reactance and a resistor of resistance are connected in series to an ac sourc10 May, 2024 (E)AC Circuits
  10. 10In a series LCR circuit, if the current leads the source voltage, then09 May, 2024 (M)AC Circuits
  11. 11The natural frequency of an LC circuit is 120 kHz . When the capacitor in the circuit is totally filled with a dielectric material, the natu09 May, 2024 (E)AC Circuits
  12. 12At very high frequencies, the current (i) in the given circuit is14 May, 2023 (M)AC Circuits
  13. 13A coil has a resistance of and an inductive reactance of at frequency. If an AC source of , is connected across the coil, the current in the14 May, 2023 (E)Alternating Current, Voltage and Power
  14. 14A series LCR circuit is connected to an ac source of voltage volt. If the resistance of the resistor in the circuit is and the impedance in 13 May, 2023 (M)Parallel AC Circuits
  15. 15The phase difference between the input voltage and the output voltage in a common emitter amplifier is13 May, 2023 (M)Alternating Current, Voltage and Power
  16. 16An alternating emf given by the equation (Where is in volts and is in seconds) is applied across a series combination of an inductor and a r13 May, 2023 (E)Alternating Current, Voltage and Power
  17. 17The power factor of an circuit containing peak current and peak voltage is , then the angle between voltage and current is12 May, 2023 (M)Quality and Power Factor
  18. 18In an ideal step up transformer, if the input voltage and input power are and respectively and the output voltage and output power are and r12 May, 2023 (E)Transformers
  19. 19A capacitor of capacitance and a coil of resistance and inductance are connected in series with a AC source. The maximum value of instantane20 Jul, 2022 (M)AC Circuits
  20. 20A generator produces a current of at . The voltage is stepped up to by a transformer before being sent on a high voltage transmission line o20 Jul, 2022 (E)Transformers
  21. 21A resistor of resistance of is connected to an AC source . The energy dissipated as heat during to is approximately.19 Jul, 2022 (M)AC Circuits
  22. 22The Q-value of a series LCR circuit with , is19 Jul, 2022 (E)AC Circuits
  23. 23An A C current is given by the expression, I t = 50 sin 200 t in amperes. The frequency and RMS value of the current respectively are18 Jul, 2022 (M)Alternating Current, Voltage and Power
  24. 24In the following circuit an input is applied at the left end. The amplitude of the output voltage at the right end across the capacitor will06 Aug, 2021 (M)AC Circuits
  25. 25A resistor and a capacitor are connected in series with a AC source. The average power dissipated in the circuit is06 Aug, 2021 (E)Alternating Current, Voltage and Power
  26. 26A B C D is a rectangular loop made of uniform wire. If A D = B C = 2 cm , what is the magnetic force per unit length acting on wire D C due 05 Aug, 2021 (M)Transformers
  27. 27An infinitely long cylinder is kept parallel to an uniform magnetic field B directed along the positive z -axis. The direction of induced cu05 Aug, 2021 (E)AC Circuits
  28. 28A solenoid has a core of material with relative permeability 501 . The windings of the solenoid are insulated from the core and carry a curr04 Aug, 2021 (M)Alternating Current, Voltage and Power
  29. 29A resistance of 20 is connected to an alternating current source of 110 V . If the frequency of the A.C. source is 50 Hz , then the time tak04 Aug, 2021 (E)Alternating Current, Voltage and Power
  30. 30A series circuit is connected to a source of alternating current. At resonance, the applied voltage and the current flowing through the circ14 Sep, 2020 (M)AC Circuits
  31. 31Which one of the following curves represents the variation of impedance with frequency in a series circuit, when connected to an AC source?14 Sep, 2020 (E)AC Circuits
  32. 32The circuit shown below is driven by an ideal AC voltage source. At frequency , choose the correct statement.11 Sep, 2020 (M)AC Circuits
  33. 33Find potential difference points and .11 Sep, 2020 (E)AC Circuits
  34. 34For an circuit, driven with voltage of amplitude and frequency , the current exhibits resonance. The quality factor is11 Sep, 2020 (E)Quality and Power Factor
  35. 35In -circuit the growth of charge on the capacitor is10 Sep, 2020 (M)AC Circuits
  36. 36An alternating voltage (in volts) is applied to the circuit below. The amplitude of the current through the circuit is10 Sep, 2020 (E)AC Circuits
  37. 37The length l of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is 2 s .09 Sep, 2020 (M)Transformers
  38. 38Which of the following components of an circuit, with an AC supply, dissipates energy?09 Sep, 2020 (E)AC Circuits
  39. 39A series circuit with and is connected to an AC supply with voltage and frequency equal to and , respectively. The magnitude of the capacita04 May, 2019 (M)AC Circuits
  40. 40circuit, the resonance frequency of circuit increases two times of the initial circuit by changing and and from to , while the inductance wa04 May, 2019 (E)AC Circuits
  41. 41An inductor coil is connected to a capacitor and an AC source of rms voltage in series. The rms current in the circuit is and is in phase wi03 May, 2019 (M)AC Circuits
  42. 42A conducting wire bent in the shape of semicircle has length L and moves in its plane with constant velocity v. A uniform magnetic field B e03 May, 2019 (E)AC Circuits
  43. 43A coil has inductance of and resistance of . It is connected to an source with peak emf and frequency . The average power dissipated in the 05 May, 2018 (M)Alternating Current, Voltage and Power
  44. 44An initially charged undriven circuit having inductance , capacitance and resistance will be05 May, 2018 (E)AC Circuits
  45. 45An oscillating circuit consisting of a capacitor with capacitance , a coil with inductance and active resistance . The mean power that shoul04 May, 2018 (E)AC Circuits
  46. 46An AC generator at is connected in series with a resistor, a inductor and a capacitor. The rms voltage across the inductor is2017AC Circuits
  47. 47A capacitance of and an inductance of and a resistance of are connected in series with an AC voltage source of . The phase angle of the circ2016Alternating Current, Voltage and Power
  48. 48In a circuit and are connected in series with an alternating voltage source of frequency . When current in the circuit leads the voltage by 2015AC Circuits
  49. 49A capacitor is connected to a power source ( in volt, in second). The value of rms current (in ampere)2014Alternating Current, Voltage and Power
  50. 50A series circuit is connected across a source of alternating emf of changing frequency and resonates at frequency . Keeping capacitance cons2013Parallel AC Circuits

Frequently Asked Questions

1.How many questions are available for Alternating Current?

This chapter includes 55 questions compiled from TS EAMCET papers spanning 2005 to 2025.

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

These are TS EAMCET 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 TS EAMCET Physics?

Alternating Current has appeared in 18 of the 25 years of TS EAMCET papers covered here, with 55 questions across 53 papers - about one per paper it appears in.

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

Of the 55 questions analysed for this chapter, 55% are easy, 27% moderate and 18% tough. 2020 had the most, with 9 questions.

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

These topics have carried the most weightage in Alternating Current:

  • AC Circuits - 31 questions (56%)
  • Alternating Current, Voltage and Power - 12 questions (22%)
  • Transformers - 6 questions (11%)
  • AC Circuits has produced the most tough questions (8).
6.Is Alternating Current's weightage in TS EAMCET going up or down?

Across all 53 papers analysed, Alternating Current has averaged about 1.0 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.