JEE Main 2022 · 29 Jul · Shift 1 · Physics Q58

PhysicsInteger+4 / -1Question 58 of 90

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-m $^2$ . [Given π = 3.14]

Your answer

Answer and worked solution

Official answer: 11

Radius $r=\frac{3.14}{2\pi}=0.5$ m.

Moment $I\pi r^2=14\times3.14\times0.25\approx11$ A m².

Answer: 11

JEE Main 2022 · 29 Jul · Shift 1, Physics question 58