This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revisionBoth sides next revision |
184_notes:q_enc [2017/09/21 02:41] – [Enclosed Charge] pwirving | 184_notes:q_enc [2018/05/15 17:00] – curdemma |
---|
Section 21.1 from Matter and Interactions (4th edition) | Section 21.1 from Matter and Interactions (4th edition) |
| |
| [[184_notes:gauss_ex|Next Page: Putting together Gauss's Law]] |
| |
| [[184_notes:eflux_curved|Previous Page: Electric Flux through a Curved Surface]] |
| |
===== Enclosed Charge ===== | ===== Enclosed Charge ===== |
One of the coolest, yet strangest, features of Gauss's Law is that the electric flux through the imagined Gaussian surface is related to the total amount of charge //__inside__// the surface (the "enclosed charge"). For a point charge or multiple point charges, it is fairly easy to find the total amount of enclosed charge - you simply sum the amount of charge that is inside the surface you picked. However, if you have a line, sheet, or volume of charge, we need to rely on charge density to find the enclosed charge. These notes will review charge density and show how we find the enclosed charge for various shapes or distributions of charge. | One of the coolest, yet strangest, features of Gauss's Law is that the electric flux through the imagined Gaussian surface is related to the total amount of charge //__inside__// the surface (the "enclosed charge"). For a point charge or multiple point charges, it is fairly easy to find the total amount of enclosed charge - you simply sum the amount of charge that is inside the surface you picked. However, if you have a line, sheet, or volume of charge, we need to rely on charge density to find the enclosed charge. These notes will review charge density and show how we find the enclosed charge for various shapes or distributions of charge. |
| |
==== Examples ==== | ==== Examples ==== |
[[:184_notes:examples:Week5_flux_dipole|Flux from a Dipole]] | |
| |
[[:184_notes:examples:Week5_flux_cube_plane|Flux through a Cube on a Charged Plane]] | |
| |
[[:184_notes:examples:Week5_flux_cylinder_line|Flux through a Cylinder on a Line of Charge]] | [[:184_notes:examples:Week5_flux_cylinder_line|Flux through a Cylinder on a Line of Charge]] |