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Physics - Alternating Current

Practise 34 MHT-CET (PCB) previous year questions on Alternating Current, compiled from papers in 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty MHT-CET (PCB) tests.

Alternating Current has been asked in 1 of the 1 years of MHT-CET (PCB) papers analysed (2026), with 34 questions in all. 59% of them were easy, 41% moderate and 0% tough. Most of its questions came from 2026, with 34 questions that year. In 2026 it had 34 questions across 11 papers, about 3.1 per paper.

The chapter's 4 topics are not weighted equally: AC Circuits (20 questions, 59%), Alternating Current, Voltage and Power (11 questions, 32%), and Transformers (2 questions, 6%) have been asked the most.

  1. 1In an AC circuit, the current is A. The value of is26 Apr, 2026 (M)Alternating Current, Voltage and Power
  2. 2In a series LCR circuit . The impedance of the circuit and phase difference between 'V' and 'I' respectively will be26 Apr, 2026 (M)AC Circuits
  3. 3A step down transformer connected to an a.c. mains of V is made to operate at V, W lamp. The current in the primary circuit is (Ignore power26 Apr, 2026 (M)Transformers
  4. 4A series LCR circuit is connected to a source of alternating e.m.f. of V. The potential difference across inductor and capacitor is V and V 26 Apr, 2026 (M)AC Circuits
  5. 5An alternating current is given by . The rms current is given by25 Apr, 2026 (M)Alternating Current, Voltage and Power
  6. 6Consider the statements on capacitive reactance. Statement I: As capacitance increases, the capacitive reactance also increases. Statement I25 Apr, 2026 (M)Alternating Current, Voltage and Power
  7. 7The ratio of power factor of purely resistive circuit to purely reactive circuit is ( and )25 Apr, 2026 (M)Quality and Power Factor
  8. 8For an R-L series circuit, the power factor is , for R-L frequency Hz. If the frequency doubles, the new power factor will be25 Apr, 2026 (E)AC Circuits
  9. 9Which phasor diagram represents LCR circuit at resonance?25 Apr, 2026 (E)AC Circuits
  10. 10A series LCR circuit is connected across a source E of e.m.f. . The current from the supply is . The impedance of the circuit and the phase 24 Apr, 2026 (M)AC Circuits
  11. 11The alternating voltage is given by . When will the voltage be maximum for the first time?24 Apr, 2026 (M)Alternating Current, Voltage and Power
  12. 12An alternating voltage is given as, This voltage E is applied to a capacitor of . The current reading in an a.c. ammeter in mA is24 Apr, 2026 (M)AC Circuits
  13. 13In an LCR series circuit, at resonance,24 Apr, 2026 (E)AC Circuits
  14. 14An alternating voltage given as, volt is applied to a capacitor of . The current reading of the ammeter will be equal to24 Apr, 2026 (E)AC Circuits
  15. 15In an AC circuit, E and I are given by V and A. The power dissipated in the circuit is24 Apr, 2026 (E)Alternating Current, Voltage and Power
  16. 16In a series LCR circuit, the resistance (R), inductive reactance and capacitive reactance . The impedance of the circuit is23 Apr, 2026 (M)AC Circuits
  17. 17If the r.m.s. current in an a.c. circuit is A, having frequency Hz. The value of current s after its value becomes zero (in A) is23 Apr, 2026 (M)Alternating Current, Voltage and Power
  18. 18In the LCR series circuit, an alternating e.m.f. and current are given by the equation and . The average power dissipated in the circuit wil23 Apr, 2026 (M)Alternating Current, Voltage and Power
  19. 19The output of a step-down transformer is measured to be V when connected to W light bulb. The value of peak current is (in A)23 Apr, 2026 (M)Alternating Current, Voltage and Power
  20. 20In an L-C-R series, AC circuit at resonance,23 Apr, 2026 (E)AC Circuits
  21. 21If a coil of inductance L and resistance R is connected to AC source with voltage V and angular frequency and current I, then the inductance23 Apr, 2026 (E)AC Circuits
  22. 22The potential differences across the resistor, capacitor and inductor are V, and V respectively in series LCR circuit. The power factor of t23 Apr, 2026 (E)AC Circuits
  23. 23An a.c. source is connected to a capacitor 'C'. Due to increase in its operating frequency22 Apr, 2026 (M)AC Circuits
  24. 24In a series LCR circuit, the inductance L is 10 mH, capacitance C is 100 F and resistance R is 20 . The frequency at which impedance is 20 ,22 Apr, 2026 (M)AC Circuits
  25. 25In a step-up transformer, if the voltage in the secondary is increased, then the current in the primary:22 Apr, 2026 (E)Transformers
  26. 26At resonance, the LC parallel resonant circuit22 Apr, 2026 (E)AC Circuits
  27. 27A series LCR circuit is connected to an AC source of V, Hz. The circuit contains resistance of , capacitor of capacitive reactance and induc22 Apr, 2026 (E)AC Circuits
  28. 28When a mH inductor and resistor are connected in series with an AC source, the voltage leads the current by . If the inductor is replaced by22 Apr, 2026 (E)AC Circuits
  29. 29The r.m.s value of current in a 50 Hz A.C. circuit is 10 A. The average value of A.C. current over a cycle is21 Apr, 2026 (M)Alternating Current, Voltage and Power
  30. 30A resistance 'R' draws a power 'P' when connected to A.C. source. If an inductor is now placed in series with the resistance, such that the 21 Apr, 2026 (M)Alternating Current, Voltage and Power
  31. 31In series LCR circuit the alternating emf 'e' and the current 'i' are given by the equations , . The average power dissipated in the circuit21 Apr, 2026 (M)AC Circuits
  32. 32In series LCR circuit, and impedance is . An rms voltage is applied across the circuit. The true power consumed in A.C. circuit in watt is21 Apr, 2026 (E)AC Circuits
  33. 33A series L-C-R circuit is connected to a source of alternating emf of . The potential difference across inductor and capacitor is and respec21 Apr, 2026 (E)AC Circuits
  34. 34When a.c. source is connected across a resistance, the correct phasor relation between the current ( ) and emf ( ) is shown in figure21 Apr, 2026 (E)Alternating Current, Voltage and Power

Frequently Asked Questions

1.How many questions are available for Alternating Current?

This chapter includes 34 questions compiled from MHT-CET (PCB) papers in 2026.

2.Are these questions only from MHT-CET (PCB), or from other exams too?

These are MHT-CET (PCB) questions specifically for the Alternating Current chapter. Questions from other exams like NEET or AIIMS are organised separately under their respective exam sections.

3.Is Alternating Current an important chapter for MHT-CET (PCB) Physics?

Alternating Current has appeared in 1 of the 1 year of MHT-CET (PCB) papers covered here, with 34 questions across 11 papers - about 3 per paper it appears in.

4.What is the difficulty level of Alternating Current questions in MHT-CET (PCB)?

Of the 34 questions analysed for this chapter, 59% are easy, 41% moderate and 0% tough. 2026 had the most, with 34 questions.

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

These topics have carried the most weightage in Alternating Current:

  • AC Circuits - 20 questions (59%)
  • Alternating Current, Voltage and Power - 11 questions (32%)
  • Transformers - 2 questions (6%)
6.Is Alternating Current's weightage in MHT-CET (PCB) going up or down?

Across all 11 papers analysed, Alternating Current has averaged about 3.1 questions per paper. In 2026, that average has stayed about the same, at about 3.1 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.