Will Current Flow Through a Rotating Copper Wire Loop in a Magnetic Field?

AI Thread Summary
A copper wire loop initially at rest in a magnetic field experiences a change in magnetic flux when rotated about a vertical axis. The discussion centers on whether this change induces a current in the loop and the direction of that current. While the assumption is that an induced current should occur due to the change from full flux to no flux, confusion arises regarding the direction of the current that would counteract this change. The absence of a clear direction for the induced current raises the question of whether any current is actually induced at all. Overall, the scenario highlights the complexities of Lenz's Law in practical applications.
oakles
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Homework Statement


A copper wire loop is initially at rest in a uniform magnetic field (full flux going through it). Between times t=t1 and t=t1+(delta)t the loop is rotated about a vertical axis as shown (no flux going through it). Will current flow through the wire of the loop during this time interval? If so, indicate the direction of the induced current and explain your reasoning.


Homework Equations


Lenz's Law


The Attempt at a Solution


Well, since the loop goes from having flux to having no flux at all I would have assumed there'd be an induced current. However, I can't seem to find a direction of current that would counteract this change in flux. So in that sense would there be no current induced at all?
 
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oakles said:
Between times t=t1 and t=t1+(delta)t the loop is rotated about a vertical axis as shown (no flux going through it).

Where? It seems you forgot to include the diagram.
 

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