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Friday, 9 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 11 April 2023, Shift 1, Physics Q39

Question 39 of 90 in this shift, Physics question 9 of 30, Section A.

The current sensitivity of moving coil galvanometer is increased by 25%. This increase is achieved only by changing in the number of turns of coils and area of cross section of the wire while keeping the resistance of galvanometer coil constant. The percentage change in the voltage sensitivity will be:
  1. (1)+25%Official answer
  2. (2)-25%
  3. (3)Zero
  4. (4)-50%

Official answer

Option 1

NTA final key.

Chapter
Moving Charges and Magnetism
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 42 of the 174 JEE Main shifts held from 2017 to 2026.