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| 184_notes:examples:week5_flux_cylinder_line [2021/06/04 00:39] – schram45 | 184_notes:examples:week5_flux_cylinder_line [2021/06/04 00:53] – schram45 | ||
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| ===Approximations & Assumptions=== | ===Approximations & Assumptions=== | ||
| * There are no other charges that contribute appreciably to the flux calculation. | * There are no other charges that contribute appreciably to the flux calculation. | ||
| - | * The cylinder is aligned with respect to the line so that its bases are perpendicular to the line, and its wall is parallel (as described). | + | * The cylinder is aligned with respect to the line so that its bases are perpendicular to the line, and its wall is parallel (as described). This is just a geometric simplification for the model, and ensures the electric field through the cylinder wall is constant as the wall will be at a uniform distance away from the line of charge at any point. |
| - | * Line of charge is very very long | + | * Line of charge is very very long: This allows us to use the electric field equation provided in the problem statement, and ensures the electric field is constant through the wall of our cylinder. |
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