We illustrate the role of magnetic forces in lifting a current-carrying wire by discussing the various forces acting on the positive ions and the electrons that compose the wire.
REFERENCES
1.
E. P.
Mosca
, “Magnetic forces doing work?
,” Am. J. Phys.
42
, 295
–297
(1974
).2.
D. J.
Griffiths
, Introduction to Electrodynamics
, 3rd ed. (Prentice-Hall
, Upper Saddle River, NJ
, 1999
).3.
Physics Forums, ⟨www.physicsforums.com⟩.
4.
R. J.
Deissler
, “Dipole in a magnetic field, work, and quantum spin
,” Phys. Rev. E
77
, 036609
-1–10 (2008
).5.
W. R.
McKinnon
, S. P.
McAlister
, and C. M.
Hurd
, “Origin of the force on a current-carrying wire in a magnetic field
,” Am. J. Phys.
49
(5
), 493
–494
(1981
).6.
Denise C.
Gabuzda
, “Magnetic force due to a current-carrying wire: A paradox and its resolution
,” Am. J. Phys.
55
(5
), 420
–422
(1987
).7.
A. C.
English
, “Force on a wire in a magnetic field
,” Am. J. Phys.
35
, 326
–327
(1967
).8.
R. W.
Chabay
and B. A.
Sherwood
, Electric and Magnetic Interactions
, Matter and Interactions
Vol. 2
, 3rd ed. (Wiley
, Hoboken, NJ
, 2010
).© 2011 American Association of Physics Teachers.
2011
American Association of Physics Teachers
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