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Physics - Current Electricity

Practise 49 WBJEE previous year questions on Current Electricity, compiled from papers spanning 2009 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty WBJEE tests.

Current Electricity has been asked in 18 of the 18 years of WBJEE papers analysed (2009–2026), with 49 questions in all. 29% of them were easy, 55% moderate and 16% tough. Most of its questions came from 2017, with 5 questions that year. In the last three years (2024–2026) it had 3 questions across 3 papers, about 1 per paper.

The chapter's 9 topics are not weighted equally: Combination of Resistances (9 questions, 18%), Resistance and Resistivity (8 questions, 16%), and Electric Cell or Battery (7 questions, 14%) have been asked the most. Over the last five years the most frequent topics have been Electric Cell or Battery (2), Electric Power and Heating Effect of Current (1), and Electric Instruments (1). Combination of Resistances has produced the most tough questions (3).

  1. 1Consider a fuse wire of length and radius . The time of heating for passing the maximum current will depend on2026Electric Power and Heating Effect of Current
  2. 2A quantity X is given by , where is the permittivity of free space, L is the length, is a potential difference and is a time interval. The d2025Electric Current and Drift of Electrons
  3. 3Consider a circuit where a cell of emf and internal resistance is connected across the terminal and as shown in figure. The value of for whi2024Electric Cell or Battery
  4. 4In an experiment on a circuit as shown in the figure, the voltmeter shows \(8 {~V}\) reading. The resistance of the voltmeter is,2023Electric Instruments
  5. 5A battery of emf and internal resistance is connected with an external resistance as shown in the figure. The battery will act as a constant2022Electric Cell or Battery
  6. 6A carbon resistor with colour code is shown in the figure. There is no fourth band in the resistor. The value of the resistance is2021Color coding of resistors
  7. 7Two metal wires of identical dimensions are connected in series. If and are the electrical conductivities of the metal wires respectively, t2021Resistance and Resistivity
  8. 8A galvanometer can be converted to a voltmeter of full-scale deflection by connecting a series resistance and can be converted to an ammeter2020Electric Instruments
  9. 9What will be the equivalent resistance between the terminals A and B of the infinite resistive network shown in the figure?2020Combination of Resistances
  10. 10What is the current shown in the given circuit?2019Combination of Resistances
  11. 11When the value of in the balanced Nheatstone bridge, shown in the figure, is increased from to , the value of shas to increased by in order 2019Wheatstone Bridge
  12. 12In the circult shown in the figure all the resistance are identical and each has the value . The equivalent resistance of the combination be2019Combination of Resistances
  13. 13Four resistors, and are connected to form four sides of a square. The resistors can be connected in any order. What is the maximum possible 2018Combination of Resistances
  14. 14What will be current through the resistor in the given circuit, a long time after the switch is made on?2018Electric Current and Drift of Electrons
  15. 15A non-zero current passes through the galvanometer shown in the circuit when the key is closed and its value does not change when the key is2018Electric Instruments
  16. 16The magnets of two suspended coll galvanometers are of the same strength so that they produce identical uniform magnetic fields in the regio2017Electric Instruments
  17. 17Six wires, each of resistance , are connected so as to form a tetrahedron. The equivalent resistance of the combination when current enters 2017Combination of Resistances
  18. 18Consider the circuit shown in the figure. The value of the resistance for which the thermal power generated in it is independent of small va2017Combination of Resistances
  19. 19Consider the circuit shown in the figure where all the resistances are of magnitude . If the current in the extreme right resistance is the 2017Combination of Resistances
  20. 20Consider the circuit given here. The potential difference between the points and is2017Kirchoffs Laws
  21. 21Two wires of same radius having lengths and and resistivities and are connected in series. The equivalent resistivity will be2016Resistance and Resistivity
  22. 22A capacitor is connected to a battery of through a resistance 1 Mega Ohm. The voltage across after 1 s is approximately2016Kirchoffs Laws
  23. 23Two equal resistances, each, are connected in series with a battery. If the resistance of first one increases by , the change required in th2016Combination of Resistances
  24. 24A current is flowing in a circuit consisting of a parallel combination of resistance and capacitance . The total charge over the entire puls2016Kirchoffs Laws
  25. 25The effective resistance between and in the figure is if each side of the cube has resistance. The effective resistance between the same two2016Combination of Resistances
  26. 26The current is in the circuit shown is2015Kirchoffs Laws
  27. 27metal wire of circular cross-section has a n'sistance . The wire is now stretched without breaking, so that its length is doubled and the de2015Resistance and Resistivity
  28. 28Two cells and of emf and respectively, are connected as shown in figure through an external resistance The internal resistance of each cell 2015Electric Cell or Battery
  29. 29A galvanometer having internal resistance requires 0.01 A for a full scale deflection. To convert this galvanometer to a voltmeter of full-s2014Electric Instruments
  30. 30Four cells, each of emf and internal resistance are connected in series across an external resistance By mistake one of the cells is connect2014Electric Cell or Battery
  31. 31A circuit consists of three batteries of emf and and internal resistances and respectively which are connected in parallel as shown in the f2014Electric Cell or Battery
  32. 32In the electrical circuit shown in the figure, the current through the resistor is2013Electric Current and Drift of Electrons
  33. 33An electric cell of emf is connected across a copper wire of diameter and length . The drift velocity of electrons in the wire is . If the l2013Electric Current and Drift of Electrons
  34. 34The equivalent resistance between the points and of the electrical network shown in the figure is2013Resistance and Resistivity
  35. 35A cell of emf is connected to a resistance for time and the amount of heat generated in it is . If the resistance is replaced by another res2013Electric Cell or Battery
  36. 36What current will flow through the resistor in the circuit shown in the figure?2012Kirchoffs Laws
  37. 37Heat is produced at a rate given by in a resistor when it is connected across a supply of voltage . If now the resistance of the resistor is2012Electric Power and Heating Effect of Current
  38. 38The - characteristics of a metal wire at two different temperatures and ) are given in the adjoining figure. Here, we can conclude that2012Electric Power and Heating Effect of Current
  39. 39A Wheatstone bridge has the resistances . and in its four arms. What resistance joined in parallel to the resistance will bring it to the ba2012Wheatstone Bridge
  40. 40An electric bulb marked as 50W-200V is connected across a supply. The present power of the bulb is2012Electric Power and Heating Effect of Current
  41. 41The resistance across \(A\) and \(B\) in the figure below will be2011Resistance and Resistivity
  42. 42Five equal resistance, each of resistance \( {R}\), are connected as shown in figure below. A battery of \( {V}\) volt is connected between 2011Wheatstone Bridge
  43. 43Two cells with the same e.m.f. \(E\) and different internal resistances \(r_1\) and \(r_2\) are connected in series to an external resistanc2011Kirchoffs Laws
  44. 44Preview not available - open to view this question.2010Electric Instruments
  45. 45A wire of resistance is elongated -fold to make a new uniform wire. The resistance of new wire2010Resistance and Resistivity
  46. 46One of copper is drawn into a wire of diameter and a wire of diameter. The resistance of the two wires will be in the ratio2009Resistance and Resistivity
  47. 47An electrical cable having a resistance of delivers at D.C. to a factory. What is the efficiency of transmission?2009Electric Power and Heating Effect of Current
  48. 48A wire of resistance is drawn out so that its new length is 3 times its original length. What is the reistance of the new wire?2009Resistance and Resistivity
  49. 49Two identical cells each of emf and internal resistance are connected in parallel with an external resistance . To get maximum power develop2009Electric Cell or Battery

Frequently Asked Questions

1.How many questions are available for Current Electricity?

This chapter includes 49 questions compiled from WBJEE papers spanning 2009 to 2026.

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

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

3.Is Current Electricity an important chapter for WBJEE Physics?

Current Electricity has appeared in 18 of the 18 years of WBJEE papers covered here, with 49 questions across 18 papers - about 3 per paper it appears in.

4.What is the difficulty level of Current Electricity questions in WBJEE?

Of the 49 questions analysed for this chapter, 29% are easy, 55% moderate and 16% tough. 2017 had the most, with 5 questions.

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

These topics have carried the most weightage in Current Electricity:

  • Combination of Resistances - 9 questions (18%)
  • Resistance and Resistivity - 8 questions (16%)
  • Electric Cell or Battery - 7 questions (14%)
  • Combination of Resistances has produced the most tough questions (3).
6.Is Current Electricity's weightage in WBJEE going up or down?

Across all 18 papers analysed, Current Electricity has averaged about 2.7 questions per paper. In the last three years (2024–2026), that average has fallen, 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.