mag moment, UT6 26. P. 54. A small bar magnet has a length 6.8 cm and its magnet

Question

mag moment, UT6 26. P. 54. A small bar magnet has a length 6.8 cm and its magnetic moment is aligned with a uniform magnetic field of magnitude 0.04T. The bar magnet is then rotated through an angle of 65 about an axis perpendicular to its length. The observed torque on the bar magnet has a magnitude of 0.1 N.m. 1) Find the magnetic moment of the magnet. 2.8 A.m2 Submit Your submissions: 2.8 Computed value 2.8 Submitted Saturday, April 1 at 8:23 PM Feedback: 2) Find the potential energy of the magnet. mJ Submit Your submissions 9 X Computed value: 9 Submitted: Saturday, April 1 at 8:26 PM

Explanation / Answer

Given that

Length L = 6.8 cm

= 0.068 m

Magnetic field B = 0.04 T

Angle = 65 degree

Torque = 0.1 Nm

(b) Potential energy of the magnet = M*B cos(theta)

= (2.75*0.04*cos(65))

= 0.04548 J

= 45.48*10 -3 J

= 45.481 mJ

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.