JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 28 June 2022, Shift 2, Physics Q41

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

Resistance of the wire is measured as 2 Ω and 3 Ω at 10°C and 30°C respectively. Temperature co-efficient of resistance of the material of the wire is :

(1)0.033 °C $^{-1}$ Official answer
(2) $-$ 0.033 °C $^{-1}$
(3)0.011 °C $^{-1}$
(4)0.055 °C $^{-1}$

Official answer

Option 1

NTA final key.

Chapter: Current Electricity
Topic: Ohm's Law and Resistance
Idea tested: Temperature Coefficient of Resistance

Same idea in other shifts

Asked 7× in all

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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.