Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
184_notes:examples:week12_changing_shape [2018/04/11 19:38] – [Solution] pwirving | 184_notes:examples:week12_changing_shape [2018/08/09 18:08] (current) – curdemma | ||
---|---|---|---|
Line 1: | Line 1: | ||
+ | [[184_notes: | ||
+ | |||
===== Flux Through a Changing, Rotating Shape ===== | ===== Flux Through a Changing, Rotating Shape ===== | ||
Suppose you have a magnetic field directed in the $-\hat{z}$-direction, | Suppose you have a magnetic field directed in the $-\hat{z}$-direction, | ||
Line 18: | Line 20: | ||
* We represent the steps with the following visual: | * We represent the steps with the following visual: | ||
- | {{ 184_notes: | + | [{{ 184_notes: |
====Solution==== | ====Solution==== | ||
Since the magnetic field has a uniform direction, and the area of the loop is flat (meaning $d\vec{A}$ does not change direction if we move along the area), then we can simplify the dot product: | Since the magnetic field has a uniform direction, and the area of the loop is flat (meaning $d\vec{A}$ does not change direction if we move along the area), then we can simplify the dot product: | ||
Line 37: | Line 39: | ||
If the loop were to continue rotating in the last step, eventually we would have zero magnetic flux, and as it rotates back around the other way, we could imagine that the flux would then be defined as " | If the loop were to continue rotating in the last step, eventually we would have zero magnetic flux, and as it rotates back around the other way, we could imagine that the flux would then be defined as " | ||
- | {{youtube> | + |