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Friday, 9 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 25 July 2021, Shift 1, Physics Q30

Question 30 of 90 in this shift, Physics question 30 of 30, Section B.

The value of aluminium susceptibility is 2.2×10−52.2\times10^{-5}. The percentage increase in the magnetic field if space within a current carrying toroid is filled with Aluminium is x104\frac{x}{10^4}. Then the value of xx is _________.

Official answer

22

NTA final key.

Chapter
Magnetism and Matter
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.