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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceTwo statementsEasyApplication

JEE Main 28 July 2022, Shift 2, Physics Q11

Question 11 of 90 in this shift, Physics question 11 of 30, Section A.

Given below are two statements : Statement I : A uniform wire of resistance 80 Ω80\ \Omega is cut into four equal parts. These parts are now connected in parallel. The equivalent resistance of the combination will be 5 Ω5\ \Omega. Statement II: Two resistances 2R and 3R are connected in parallel in a electric circuit.The value of thermal energy developed in 3R and 2R will be in the ratio 3:2. In the light of the above statements, choose the most appropriate answer from the option given below
  1. (1)Both statement I and statement II are correct
  2. (2)Both statement I and statement II are incorrect
  3. (3)Statement I is correct but statement II is incorrectOfficial answer
  4. (4)Statement I is incorrect but statement II is correct

Official answer

Option 3

NTA final key.

Chapter
Current Electricity
Topic
Ohm's Law and Resistance
Idea tested
Resistance of Cut and Recombined Uniform Wires

Same idea in other shifts

Asked 4× in all
  1. 5 Apr 2024, Shift 2 · Q56A wire of resistance 20 Ω20\ \Omega is divided into 10 equal parts, resulting pairs. A combination of two parts are connected in parallel…MediumNumerical value
  2. 27 Jan 2024, Shift 1 · Q41A wire of resistance R and length L is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be :EasySingle correct
  3. 30 Jan 2024, Shift 2 · Q41When a potential difference VV is applied across a wire of resistance RR, it dissipates energy at a rate WW. If the wire is cut into…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.