How to determine the potential difference?

AI Thread Summary
A horizontal rod moving northward through a downward-pointing magnetic field experiences a potential difference due to electromagnetic induction. The west end of the rod is at a higher electric potential than the east end because of the direction of the induced current, which is influenced by the Lorentz force. The Lorentz force equation, F = q(v × B), helps explain how the motion of charges in the rod generates this potential difference. Understanding the interaction between the rod's velocity and the magnetic field is crucial for determining the voltage across the rod. This principle is fundamental in electromagnetic theory and applications.
cdymdcool
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1. A horizontal rod(oriented in e-w direction) is moved northward at constant velocity through a magnetic field that points straight down.



2. Why is the west end of the rod is at higher potential than the east end?



3. I have no idea how to obtain any information about V.
 
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cdymdcool said:
1. A horizontal rod(oriented in e-w direction) is moved northward at constant velocity through a magnetic field that points straight down.



2. Why is the west end of the rod is at higher potential than the east end?



3. I have no idea how to obtain any information about V.

Show us the equation for the Lorentz force. How can you use it to help you answer this question?
 

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