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Physics - Alternating Current

Practise 17 KVPY previous year questions on Alternating Current, compiled from papers spanning 2010 to 2020. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KVPY tests.

  1. 1An initially uncharged capacitor C is being charged by a battery of emf E through a resistance R upto the instant when the capacitor is char2020 (SB/SX)
  2. 2The output voltage (taken across the resistance) of a L C R series resonant circuit falls to half its peak value at a frequency of 200 Hz an2020 (SB/SX)
  3. 3The box in the circuit below has two inputs marked v + and v - and a single output marked V 0 . The output obeys + 10 V if v + v - V 0 = - 12020 (SB/SX)
  4. 4A circuit consists of a coil with inductance L and an uncharged capacitor of capacitance C . The coil is in a constant uniform magnetic fiel2019 (SB/SX)
  5. 5Consider the R-L-C circuit given below. The circuit is driven by a AC source with peak voltage If and , the maximum current in the circuit i19 Nov, 2017 (SB/SX)
  6. 6A bird sitting on a single high tension wire does not get electrocuted because05 Nov, 2017 (SB/SX)
  7. 7The primary and the secondary coils of a transformer contain 10 and 100 turns, respectively. The primary coil is connected to a battery that2016 (SA)
  8. 8If the input voltage to the circuit below is given by , the output voltage is given by Which one of the following four graphs best depict th2016 (SB/SX)
  9. 9In the circuit shown below, all the inductors (assumed ideal) and resistors are identical. The current through the resistance on the right i2015 (SB/SX)
  10. 10An ac voltmeter connected between points and in the circuit below reads . If it is connected between and , the reading is . The reading when2015 (SB/SX)
  11. 11What are the charges stored in the and capacitors in the circuit below, once the currents become steady?2014 (SB/SX)
  12. 12A blackbox (BB) which may contain a combination of electrical circuit elements (resistor, capacitor or inductor) is connected with other ext2013 (SB/SX)
  13. 13The circuit shown has been connected for a long time. The voltage across the capacitor is2013 (SB/SX)
  14. 14For a domestic AC supply of at 50 cycles per second, the potential difference between the terminals of a two pin electric outlet in a room i2011 (SB/SX)
  15. 15In the circuit shown, the switch is closed at time . Which of the graphs shown below best represents the voltage across the inductor, as see2011 (SB/SX)
  16. 16The circuit shown consists of a switch (S), a battery (B) of emf E, a resistance , and an inductor . The current in the circuit at the insta2010 (SB/SX)
  17. 17Consider the infinite ladder circuit shown below. For which angular frequency will the circuit behave like a pure inductance?2010 (SB/SX)

Frequently Asked Questions

1.How many questions are available for Alternating Current?

This chapter includes 17 questions compiled from KVPY papers spanning 2010 to 2020.

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

These are KVPY 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 KVPY Physics?

Alternating Current has appeared in 9 of the 11 years of KVPY papers covered here, with 17 questions across 11 papers - about 2 per paper it appears in.