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184_notes:resistors [2021/02/26 17:46] – bartonmo | 184_notes:resistors [2021/03/04 19:46] (current) – bartonmo | ||
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===== Resistors in Circuits ===== | ===== Resistors in Circuits ===== | ||
- | To this point, we have talked about what happens inside a wire when connected to two ends of battery - both in the //steady state current// situation and in the initial transient when the circuit is first connected. We found a few important conclusions about the circuit in steady | + | To this point, we have talked about what happens inside a wire when connected to two ends of battery - both in the __//steady state current//__ situation and in the initial transient when the circuit is first connected. We found a few important conclusions about the circuit in // |
* The electron current going into a location must be the same as the current leaving that location because [[184_notes: | * The electron current going into a location must be the same as the current leaving that location because [[184_notes: | ||
* The electron current moves through the wire because there is a constant electric field inside the wire. This electric field comes primarily from the [[184_notes: | * The electron current moves through the wire because there is a constant electric field inside the wire. This electric field comes primarily from the [[184_notes: | ||
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$$E_{thin}=\frac{A_{thick}}{A_{thin}}E_{thick}$$ | $$E_{thin}=\frac{A_{thick}}{A_{thin}}E_{thick}$$ | ||
- | [{{ 184_notes:5notes_surfacecharge.png? | + | [{{ :184_notes:thinresistorefield_new_.png? |
Since $A_{thick}> | Since $A_{thick}> |