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Saturday, 10 October

JEE Main 2017 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 2 April 2017 (offline), Physics Q29

Question 29 of 90 in this shift, Physics question 29 of 30.

Which of the following statements is **false** ?
  1. (1)Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude.
  2. (2)In a balanced wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed.Official answer
  3. (3)A rheostat can be used as a potential divider.
  4. (4)Kirchhoff's second law represents energy conservation.

Official answer

Option 2

CBSE answer key (25/04/2017, used for result).

Chapter
Current Electricity
Topic
Wheatstone Bridge
Idea tested
Battery and Galvanometer Interchangeability

Same topic in other shifts

All Wheatstone Bridge questions
  1. 6 Apr 2026, Shift 2 · Q48A moving coil of galvanometer when shunted with 2 Ω\Omega resistance gives a full scale deflection for a current of 500 mA. When a…MediumNumerical value
  2. 7 Apr 2025, Shift 1 · Q36A wire of resistance R is bent into a triangular pyramid as shown in figure with each segment having same length. The resistance between…MediumDiagram basedHas a figure
  3. 9 Apr 2024, Shift 1 · Q50A galvanometer has a coil of resistance 200 Ω200\ \Omega with a full scale deflection at 20 μ20\ \muA. The value of resistance to be added to…EasySingle correct
  4. 29 Jan 2024, Shift 1 · Q42A galvanometer having coil resistance 10 Ω10\,\Omega shows a full scale deflection for a current of 3mA. For it to measure a current of 8A,…EasySingle correct
  5. 29 Jan 2024, Shift 1 · Q50The deflection in moving coil galvanometer falls from 25 divisions to 5 division when a shunt of 24 Ω24\,\Omega is applied. The resistance…MediumSingle correct
  6. 31 Jan 2024, Shift 2 · Q49The resistance per centimeter of a meter bridge wire is rr, with X ΩX\ \Omega resistance in left gap. Balancing length from left end is at…MediumSingle correct

Question text from the official JEE Main paper published by NTA (CBSE ran the 2017 exam); answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.