Revista de Enseñanza de la Física (Oct 2010)

The physics that is hidden in a simple electrical circuit

  • Maricel Matar,
  • Reinaldo Welti

Journal volume & issue
Vol. 23, no. 1-2
pp. 85 – 94


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This paper attempts to draw attention to the superfi cial explanations offered in most textbooks on thetransfer of energy from the source to the resistance in a simple DC circuit. We can achieve a more meaningfuldescription of the transfer if it knows the nature of the electric fi eld associated with a conductorcarrying a current and how the surface charges are distributed on the surface of them.