Edward C. Jordan Memorial Offering of the First Course under the Indo-US Inter-University Collaborative Initiative in Higher Education and Research: Electromagnetics for Electrical and Computer Engineering by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana, Illinois, USA Amrita Viswa Vidya Peetham, Coimbatore July 10 – August 11, 2006
5.2 Potential Functions for Static Fields
For static fields,
But, also known as the potential difference between A and B, for the static case.
Given the charge distribution, find V using superposition. Then find E using the above. For a point charge at the origin, Since agrees with the previously known result.
Thus for a point charge at an arbitrary location P Q P5.9
Considering the element of length dz at (0, 0, z), we have Using
Magnetic vector potential due to a current element Analogous to