J. A. Hernandes¹     E. Capelas de Oliveira²     A. K. T. Assis³

[1] Instituto de Física ‘Gleb Wataghin’, Universidade Estadual de Campinas – Unicamp, 13083-970 Campinas, São Paulo, Brasil, julioher@ifi.unicamp.br

[2] Departamento de Matemática Aplicada, Imecc – Unicamp, 13081-970 Campinas (SP) Brasil, capelas@ime.unicamp.br

[3] Instituto de Física ‘Gleb Wataghin’, Universidade Estadual de Campinas – Unicamp, 13083-970 Campinas, São Paulo, Brasil, assis@ifi.unicamp.br; homepage: http://www.ifi.unicamp.br/~assis/

RESUMEN

En este trabajo consideramos una capa resistiva cilíndrica que transporta una corriente constante. Una batería genera la corriente en el centro del conductor. Estudiamos el comportamiento del potencial, campo eléctrico y cargas superficiales cerca de la batería.

Palabras claves: Potencial eléctrico, potencial cerca de la batería, cargas superficiales.

ABSTRACT

In this work we consider a long, resistive cylindrical shell carrying a steady current. A battery in the middle of the wire generates the current. We study the behavior of the potential, electric field and surface charges close to the battery.

Keywords: Electric potential, potential close to the battery, surface charges.

REFERENCES

[1] A.K.T. Assis and J.I. Cisneros. The problem of surface charges and fields in coaxial cables and its importance for relativistic physics. Open Questions in Relativistic Physics, pp. 177–185. F. Selleri (editor), Apeiron, Montreal, pp.508-511, 1998.

[2] A.K.T. Assis and J.I. Cisneros. Surface charges and fields in a resistive coaxial cable carrying a constant current. IEEE Transactions on Circuits and Systems I, 47:63–66, 2000.

[3] A.K.T. Assis, J.A. Hernandes and J.E. Lamesa. Surface charges in conductor plates carrying constant currents. Foundations of Physics, 31:1501–1511, 2001.

[4] A.K.T. Assis and A.J. Mania. Surface charges and electric field in a two-wire resistive transmission line. Revista Brasileira de Ensino de Física, 21:469–475, 1999.

[5] A.K.T. Assis, W.A. Rodrigues Jr., and A.J. Mania. The electric field outside a stationary resistive wire carrying a constant current. Foundations of Physics, 29:729–753, 1999.

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[8] D.J. Griffiths. Introduction to Electrodynamics. Prentice Hall, New Jersey, 3rd edition, pp. 336-337, 1999.

[9] J.A. Hernandes and A.K.T. Assis. The potential, electric field and surface charges for a resistive long straight strip carrying a steady current. American Journal of Physics, 71:938–942, 2003.

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[13] O.D. Jefimenko. Electricity and Magnetism. Electret Scientific Company, Star City, 2nd edition, pp. 318 and 509-511, 1989.

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[16] O.D. Jefimenko. Electricity and Magnetism. Electret Scientific Company, Star City, 2nd edition,  pp. 509-511, 1989.

[17] E. Butkov. Mathematical Physics. Addison-Wesley, Reading, pp. 403, 1968.

[18] O.D. Jefimenko. Electricity and Magnetism. Electret Scientific Company, Star City, 2nd edition, Prob9.33 and Fig. 14.7, 1989.

[19] E. Butkov. Mathematical Physics. Addison-Wesley, Reading, pp. 312, 1968.

Recibido el 12 de mayo de 2004, aceptado el 30 de agosto de 2004