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Saturday, 31 October

JEE Main 2020 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 5 September 2020, Shift 1, Physics Q14

Question 14 of 75 in this shift, Physics question 14 of 25.

A galvanometer of resistance G is converted into a voltmeter of range 0−-1V by connecting a resistance R1R_1 in series with it. The additional resistance that should be connected in series with R1R_1 to increase the range of the voltmeter to 0−-2V will be :
  1. (1)G
  2. (2)R1−GR_1 - G
  3. (3)R1R_1
  4. (4)R1+GR_1 + GOfficial answer

Official answer

Option 4

NTA final key (Sep 2020).

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