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Physics 122 Unit 1 Electrostatics Review Coulomb's Law From Coulomb's Law to the Electric Field q1 q2 Q q3 and From Coulomb's Law to the Electric Field q1 q2 Q q3 and The Electric Field from Point Charges The Electric Field from an Integral The Electric Field from an Integral The Electric Field from an Integral Problem 23-28 The Electric Field from an Integral Problem 23-29 Gauss's Law Faraday's Lines of Force The Inverse Square Law Flux “The NUMBER of Electric Field Lines” Electric Field “The DENSITY of Electric Field Lines” Area Flux through a Sphere It's the same Flux through ANY surface that encloses the charge! The Net Flux is Zero for any closed surface for charges outside the surface Gauss's Law Net Flux And also,,, Electric Fields and Metals E is perpendicular to the metal surface E=0 Inside! Problem 24-47 Energy Principles Electric Potential - Voltage Energy Methods Energy Methods Energy Methods The Electric Potential The Electric Potential Energy Energy Methods Where Change in Electric Potential Change in Electric Potential Energy Electric Potential of a Point Charge We define the Electric Potential to be zero at The Electric Potential of a Point Charge Electric Potential Energy Electric Potential From Problem 3: Inside: Outside: Metals form Equipotential Surfaces All points on a connected metal surface have the same V! Finding E from V y x Capacitors The Parallel Plate Capacitor Energy Stored in a Charged Capacitor Energy Density