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Saturday, 31 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 22 July 2021, Shift 2, Physics Q26

Question 26 of 90 in this shift, Physics question 26 of 30, Section B.

The total charge enclosed in an incremental volume of 2×10−9 m32\times10^{-9}\ \mathrm{m^3} located at the origin is ________ nC, if electric flux density of its field is found as D=e−xsin⁡y i^−e−xcos⁡y j^+2z k^ C/m2D = e^{-x}\sin y\,\hat{i} - e^{-x}\cos y\,\hat{j} + 2z\,\hat{k}\ \mathrm{C/m^2}.

Official answer

4

NTA final key.

Chapter
Electric Charges and Fields
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.