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brianll
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I am having trouble understanding how the right hand rule works with lenz's law. Please explain
How do Lenz's Law and the right hand rule work together in electromagnetism?
- Thread starter brianll
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- hand Law Lenz Lenz law Right hand rule
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SUMMARY
Lenz's Law and the right-hand rule are fundamental concepts in electromagnetism that describe the behavior of induced currents in response to changing magnetic fields. Lenz's Law states that the induced current will flow in a direction that opposes the change in magnetic flux, as demonstrated by the classic experiment of dropping a strong magnet through a copper pipe, where the magnet falls slowly due to the induced current opposing its motion. The right-hand rule serves as a method to determine the direction of the induced current and the magnetic force in these scenarios. Understanding these principles is crucial for analyzing electromagnetic interactions in various applications.
PREREQUISITES- Understanding of Lenz's Law
- Familiarity with the right-hand rule in electromagnetism
- Basic knowledge of magnetic flux
- Experience with experimental setups involving magnets and conductive materials
- Explore the applications of Lenz's Law in electromagnetic induction
- Learn about the right-hand rule in different electromagnetic contexts
- Investigate the effects of varying magnetic flux on induced currents
- Conduct experiments demonstrating Lenz's Law with magnets and conductive pipes
Students and educators in physics, electrical engineers, and anyone interested in the principles of electromagnetism and their practical applications.
- #2
Delphi51
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Welcome to PF, brian. Lenz's law is an interesting and useful shortcut for working out the direction of a force. The hand rule is the basic and longer way to work out many of these situations. There isn't much more to be said unless you are interested in a specific situation.
The classic demo for Lenz' law is dropping a strong magnet through a copper pipe. It falls s l o w l y. Lenz' law says the magnetism induces a current in the pipe which acts to oppose the motion of the magnet.
A similar apparatus has a piece of copper pipe suspended by threads so it is free to move. When you pull the magnet out, Lenz' law says the copper pipe tries to hold on to the magnet and you can see this because the magnet pulls back on the pipe and makes it move. Here is the explanation of that effect using the hand rule:
The classic demo for Lenz' law is dropping a strong magnet through a copper pipe. It falls s l o w l y. Lenz' law says the magnetism induces a current in the pipe which acts to oppose the motion of the magnet.
A similar apparatus has a piece of copper pipe suspended by threads so it is free to move. When you pull the magnet out, Lenz' law says the copper pipe tries to hold on to the magnet and you can see this because the magnet pulls back on the pipe and makes it move. Here is the explanation of that effect using the hand rule:
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brianll
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Hi Delphi. How do you figure out if the magnetic flux is increasing or decreasing?
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Delphi51
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In the example, the magnetic flux is from a permanent magnet and is constant.
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