JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 29 July 2022, Shift 1, Physics Q58

Question 58 of 90 in this shift, Physics question 28 of 30, Section B.

A wire of length 314 cm carrying current of 14 A is bent to form a circle. The magnetic moment of the coil is __________ A-

\mathrm{m^2}

. [Given

\pi

= 3.14]

Official answer

NTA final key.

Chapter: Moving Charges and Magnetism
Topic: Magnetic Dipole Moment
Idea tested: Magnetic moment of a current loop

Same idea in other shifts

Asked 3× in all

26 Jul 2022, Shift 2 · Q46Two concentric circular loops of radii $r_1$ =30 cm and $r_2$ =50 cm are placed in X-Y plane as shown in the figure. A current $I = 7A$ is…MediumDiagram basedHas a figure
30 Jul 2022, Shift 2 · Q15A wire of length 8 m is bent to form a circular loop in y-z plane. A current of 0.5 A is flowing in anticlockwise direction in it , the…MediumSingle correct

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.