OpenStax University Physics/E&M/Electric Potential

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(Vol. 2):    5:Electric Charges and Fields    6:Gauss's Law    7:Electric Potential    8:Capacitance    9:Current and Resistance    10:Direct-Current Circuits    11:Magnetic Forces and Fields    12:Sources of Magnetic Fields    13:Electromagnetic Induction    14:Inductance    15:Alternating-Current Circuits    16:Electromagnetic Waves


Chapter 7[edit | edit source]

Electric Potential[edit | edit source]

Electric potential . Change in potential energy

▭  Electron (proton) mass = 9.11×10−31kg (1.67× 10−27kg). Electron volt: 1 eV = 1.602×10−19J
▭  Near an isolated point charge where =8.99×109 N·m/C2 is the Coulomb constant.
▭ Work done to assemble N particles
▭ Electric potential due to N charges. . For continuous charge . For a dipole, .
▭ Electric field as gradient of potential ▭ Del operatornote: Cartesian Cylindrical Spherical

For quiz at QB/d_cp2.7[edit | edit source]

= electric potential

= change in potential energy (or simply )

Electron (proton) mass = 9.11×10−31kg (1.67× 10−27kg). Elementary charge = e = 1.602×10−19C.

=kinetic energy. 1 eV = 1.602×10−19J

near isolated point charge

Many charges: .