Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revisionLast revisionBoth sides next revision | ||
184_notes:patterns_fields [2018/06/05 15:42] – [Patterns in the Electric Field] curdemma | 184_notes:patterns_fields [2020/08/20 16:03] – dmcpadden | ||
---|---|---|---|
Line 1: | Line 1: | ||
- | [[184_notes: | + | / |
+ | |||
+ | [[184_notes: | ||
===== Patterns in the Electric Field ===== | ===== Patterns in the Electric Field ===== | ||
Line 9: | Line 11: | ||
**Magnitude of Electric Field** | **Magnitude of Electric Field** | ||
- | * If you are looking for the electric field outside the object with a simple shape (sphere, cylinder), it doesn' | + | * If you are looking for the electric field **outside** the object with a simple shape (sphere, cylinder), |
* If you are looking for the electric field inside a conductor, it will always be zero (no matter what the shape). | * If you are looking for the electric field inside a conductor, it will always be zero (no matter what the shape). | ||
* If you are looking for the electric field inside an insulator, it will likely be non-zero (expect perhaps in the very center for certain cases). | * If you are looking for the electric field inside an insulator, it will likely be non-zero (expect perhaps in the very center for certain cases). | ||
**Where charges are located** | **Where charges are located** | ||
- | * Charges move to the surface of conductors - there is not net charge inside the conductor (the atoms are still there, but there are neutral). | + | * Charges move to the surface of conductors - there is not net charge inside the conductor (the atoms are still there, but they are neutral). |
* Charges stay where they are placed on insulators - it is possible to have net charge in inside an insulator. | * Charges stay where they are placed on insulators - it is possible to have net charge in inside an insulator. | ||
**Approximations** | **Approximations** | ||
- | * If you are looking for the field outside of a sphere with a uniform distribution of charge, | + | * If you are looking for the field outside of a sphere with a uniform distribution of charge, |
- | * If you are looking for the field outside of a cylinder with a uniform distribution of charge, | + | * If you are looking for the field outside of a cylinder with a uniform distribution of charge, |