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--- 184_notes:examples:week12_moving_coils_flux [2017/11/10 19:28] – [Solution] tallpaul
+++ 184_notes:examples:week12_moving_coils_flux [2017/11/10 20:26] – [Solution] tallpaul
@@ Line 19: / Line 19: @@
 {{ 184_notes:12_coils.png?400 |Two Coils}}
 ====Solution====
-Before any motion happens, we can look at the rings from a side view, and represent the magnetic flux as shown below. The direction is determined using the [[184_notes:rhr|Right Hand Rule]].
+Before any motion happens, we can look at the rings from a side view, and represent the magnetic field as shown below. The direction is determined using the [[184_notes:rhr|Right Hand Rule]].
-{{ 184_notes:12_coils_field.png?400 |Coils with Field}}
+{{ 184_notes:12_coils_field.png?500 |Coils with Field}}
 When the rings begin to move towards one another, you can imagine that the second ring experiences an increase in magnetic flux, since the magnetic field is stronger closer to the ring with current. When we say the flux "increases", we imply that the flux was positive to begin with, so the area-vector of the second ring must point in the same direction as the magnetic field. In our representation, this would be to the right.