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23 Nov 2019
A length of copper wire carries a current of 13 A, uniformlydistributed through its cross section. The wire diameter is 2.5 mm,and its resistance per unit length is 2.9 /km.
(a) Calculate the energy density of the magnetic field at thesurface of the wire. (Need answer in J/m^3)
(b) Calculate the energy density of the electric field at thesurface of the wire. (Need answer in J/m^3)
A length of copper wire carries a current of 13 A, uniformlydistributed through its cross section. The wire diameter is 2.5 mm,and its resistance per unit length is 2.9 /km.
(a) Calculate the energy density of the magnetic field at thesurface of the wire. (Need answer in J/m^3)
(b) Calculate the energy density of the electric field at thesurface of the wire. (Need answer in J/m^3)
5 May 2023
Bunny GreenfelderLv2
7 Nov 2019
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