41. In both forms includes magnetization current density  as well as conduction and polarization current densities. 42. The source current densities  are going to be the sole source variables in the problem! 43. Exchange current densities  reflect intrinsic rates of electron transfer between an analyte and the electrode. 44. In both forms includes magnetization current density as well as conduction and polarization current densities . 45. Very high density means 1000x higher than current density  ( users per square meter ). 46. All curves are normalized so that the current density  at the surface is the same. 47. Current density  in round wire for various skin depths.48. That is, the current density  on the right side of the Amp�re Maxwell equation is: 49. The vertical axis is relative current density . 50. Current density  reached 100 milliamperes / cm2.