Electric Potential

# Electric Potential - Electric Potential and Potential...

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TOC 1 Electric Potential and Potential Energy TOC Review of Work Work Done on a Point Charge by a Point Charge Potential Energy and Potential of Point Charges Potential Energy and Potential of Many Point Charges Relationship between Force, Field, Energy, Potential Electric Power Potential Surfaces SI Units Field and Potential Graphs

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TOC 2 Electric Potential and Potential Energy TOC Definition of Work Work is defined as the amount of force acting over a distance. The unit of work is either Joules (J) or electron-volts (eV) Δ r F F r W o o x' cos W F r ' I φ
TOC 3 Electric Potential and Potential Energy TOC Example of Work The following is an example of the work done by gravity on a mass. Δh 2 Δh 1 Δw y x F r W o o x' m ± ² > @ 2 1 2 1 0 0 h mg h mg h mg h mg W ' ³ ' ´ ´ ' ³ ³ ' ´

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TOC 4 Electric Potential and Potential Energy TOC A 2 A 1 Example of Work This is an example using the the fact that integrals are areas under a curve. ± ²± ² J N m bh A 5 2 5 2 1 2 1 1 ± ²± ² J N m bh A 6 4 3 2 1 2 1 2 ´ ´ J A A W 1 2 1 ´ ³ F (N) 0 1 -1 X (m) 0 1 2 F r W o o x'
TOC 5 Electric Potential and Potential Energy TOC Definition of a Conservative Force A force is conservative if the work it does on an object is zero when the object moves along a path and returns to its initial position. Examples of conservative forces are gravity, elastic force, electricity and magnetism.

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