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JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 25 June 2022, Shift 2, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

If

n

represents the actual number of deflections in a converted galvanometer of resistance

G

and shunt resistance

S

. Then the total current

I

when its figure of merit is

K

will be :

(1) $\frac{KS}{(S+G)}$
(2) $\frac{(G+S)}{nKS}$
(3) $\frac{nKS}{(G+S)}$
(4) $\frac{nK(G+S)}{S}$ Official answer

Official answer

Option 4

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