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184_notes:examples:week2_electric_field_negative_point [2021/05/19 15:11] – schram45 | 184_notes:examples:week2_electric_field_negative_point [2021/05/19 15:11] (current) – schram45 | ||
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<WRAP TIP> | <WRAP TIP> | ||
===Assumptions=== | ===Assumptions=== | ||
- | * Point charge assumption: Necessary to use electric field equation. | ||
* Constant charge: Makes charge in electric field equation not dependent on time or space as no information is given in problem suggesting so. | * Constant charge: Makes charge in electric field equation not dependent on time or space as no information is given in problem suggesting so. | ||
* Charge is not moving: This makes our separation vector fixed in time as a moving charge would have a changing separation vector with time. | * Charge is not moving: This makes our separation vector fixed in time as a moving charge would have a changing separation vector with time. |