Recent content by spindecide

  1. S

    Undergrad Deriving expression for resistance in terms of current density

    But j is not just equal to sigma times E as the effect of the emf needs to be considered, so that j equals sigma times (E + E').
  2. S

    Undergrad Deriving expression for resistance in terms of current density

    But how is R written as the first integral?
  3. S

    Undergrad Deriving expression for resistance in terms of current density

    Is there a way to obtain equation 9.42 (I is current, j is current density, and sigma is conductivity) in the following image (from Modern Electrodynamics by Andrew Zangwill, the part on electromotive force) besides using V=IR and substituting the line integral of j/conductivity for V? The...
    • spindecide
    • Thread
    • Current Current density Density deriving Expression Resistance Terms
    • Replies: 7
    • Forum: Electromagnetism