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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceOtherMediumConceptual

JEE Main 27 July 2022, Shift 2, Physics Q41

Question 41 of 90 in this shift, Physics question 11 of 30, Section A.

(A) The drift velocity of electrons decreases with the increase in the temperature of conductor. (B) The drift velocity is inversely proportional to the area of cross-section of given conductor. (C) The drift velocity does not depend on the applied potential difference to the conductor. (D) The drift velocity of electron is inversely proportional to the length of the conductor. (E) The drift velocity increases with the increase in the temperature of conductor. Choose the correct answer from the options given below :
  1. (1)(A) and (B) only
  2. (2)(A) and (D) onlyOfficial answer
  3. (3)(B) and (E) only
  4. (4)(B) and (C) only

Official answer

Option 2

NTA final key.

Chapter
Current Electricity
Topic
Ohm's Law and Resistance
Idea tested
Drift Velocity and Current

Same idea in other shifts

Asked 5× in all
  1. 8 Apr 2023, Shift 1 · Q59A current of 2 A2\ \mathrm{A} flows through a wire of cross-sectional area 25.0 mm225.0\ \mathrm{mm^2}. The number of free electrons in a cubic…EasyNumerical value
  2. 8 Apr 2023, Shift 2 · Q60The number density of free electrons in copper is nearly 8×10288 \times 10^{28} m−3^{-3}. A copper wire has its area of cross section =…EasyNumerical value
  3. 10 Apr 2023, Shift 2 · Q50In a metallic conductor, under the effect of applied electric field, the free electrons of the conductorEasySingle correct
  4. 17 Mar 2021, Shift 1 · Q5A current of 10 A exists in a wire of crosssectional area of 5 mm2^2 with a drift velocity of 2×10−32\times10^{-3} ms−1^{-1}. The number of…MediumSingle 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.