Need Help with Applying the "Point Form" of Ohm's Law I am quite familiar with the standard form of Ohm's Law V = IR as I have been using it for years in circuit analysis. However, there is another form of Ohm's Law that is known as the "Point Form" of Ohm's Law: E = Jρ Where E is a vector quantity expressing Electric Field, E is a vector quantity expressing Current Density, and ρ is a scalar quantity expressing Resistivity. It seems that the "Point Form" of Ohm's Law would be quite useful for extending my knowledge of circuit analysis. I feel that if I use it right, I could tell what E is at any point in an electrical circuit. However, I do not have an "intuitive feel" on how to use it yet in circuit analysis. Could I have a few pointers on how to do this?