Abstract
In this chapter we deal with the problem of determining the electric fields in conducting domains under the assumption that sources, i.e., charges and currents do not depend on time but, unlike electrostatics, currents are not null. In this case, the electric and magnetic fields are not coupled. Thus, we can compute first the current density which can be used later in the magnetostatic problem (Chap. 9) to obtain the magnetic fields. We will state the direct current problem in terms of the scalar electric potential and introduce the resistance and conductance matrices. At the end of the chapter we give a brief description of lumped direct current circuits.
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© 2014 Springer International Publishing Switzerland
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Bermúdez, A., Gómez, D., Salgado, P. (2014). Direct current. In: Mathematical Models and Numerical Simulation in Electromagnetism. UNITEXT(), vol 74. Springer, Cham. https://doi.org/10.1007/978-3-319-02949-8_8
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DOI: https://doi.org/10.1007/978-3-319-02949-8_8
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-02948-1
Online ISBN: 978-3-319-02949-8
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