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Electric Potential Electric Fields The region surrounding a charge where another charge will experience a force 5/25/2017 APHY101 1 Electric Potential Electric Potential Energy The electric potential energy (PEe ) is the energy of a charge due to its location relative to other charges 5/25/2017 APHY101 2 Electric Potential Electric Potential Energy ΔPEe = W when work is done on the system • Pushing like charges together or separating unlike charges ΔPEe = -W when work is done by the system • When like charges repel or unlike charges attract This is similar to gravity • Lifting an object vs. dropping an object 5/25/2017 APHY101 3 Electric Potential Electric Potential Energy Work is done when you move a charge against an electric field 5/25/2017 APHY101 4 Electric Potential Electric Potential Electric potential ( V ) is the electric potential energy per charge • Unit: J/C or volts Each object in the diagram has the same potential but different potential energy 5/25/2017 APHY101 5 Electric Potential Electric Potential Difference The difference in electric potential between two points • Also known as voltage or ΔV Sources: batteries and outlets 5/25/2017 APHY101 6