PHYS208 Fundamentals of Physics II

Hint for Ch. 31, 90P

a) Use the value for the magnetic field in a toroid in the expression for magnetic energy density.

[toroid]

b) The energy density should be integrated using circular strips of radius r, height h, and thickness dr, which has an infinitesimal volume of 2 pi r h dr.

[toroid]


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Last updated Nov. 9, 1997.
Copyright George Watson, Univ. of Delaware, 1997.