New Physics Video Playlist - Potential Difference Between Two Points In an Electric Field - Current Density & Resistivity

This physics video tutorial explains how to calculate the potential difference between two points in an electric field on a metallic conductor. It also explains how to calculate the current density given the electric current and the diameter of the material. The current density is equal to the current divided by the cross sectional area. The electric field is equal to the resistivity of the material multiplied by the current density. The potential difference is the product of the electric field and the distance between the two points. This video contains plenty of examples and practice problems. Electric Current In Circuits: https://www.youtube.com/watch?v=r-SCyD7f_zI The Electric Battery: https://www.youtube.com/watch?v=xrf6I_5vX64 Ohm's Law Problems: https://www.youtube.com/watch?v=NxxNu9Cek1E Resistance and Resistivity: https://www.youtube.com/watch?v=PIJTu8z0-_U Resistor Color Code: https://www.youtube.com/watch?v=G1mZutobxDU ______________________________ Internal Resistance of a Battery: https://www.youtube.com/watch?v=R1QN_0fcZ_8 Electromotive Force of a Battery: https://www.youtube.com/watch?v=k077CwKGiwk Drift Velocity and Current Density: https://www.youtube.com/watch?v=KiTkSZy79cw Alternating Current Vs Direct Current: https://www.youtube.com/watch?v=ERIToctYUcQ ______________________________ Schematic Diagrams & Symbols: https://www.youtube.com/watch?v=Dl1gFBNa0Ik Open, Closed, and Short Circuits: https://www.youtube.com/watch?v=v5RJf_V0LYA Resistors In Series: https://www.youtube.com/watch?v=9z53qVQjasU Resistors In Parallel: https://www.youtube.com/watch?v=SYrOiQs3X2U Physics PDF Worksheets: https://www.video-tutor.net/physics-basic-introduction.html