What Causes the Ring to Rise in Faraday's and Lenz's Law Demonstration?

In summary, the aluminum foil rises because of the alignment of the induced current and magnetic field with the larger ring. Despite the attraction, the foil is not repulsed by the coil due to its high resistance.
  • #1
Davidmb19
21
0


What is the actual explanation for the last demonstration, for why the ring rises up?o_O
 
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  • #2
Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 
  • #3
The aluminum foil rises because the induced current and magnetic field are in the same direction as the larger ring. This means they are attracted because their magnetic fields align. However, the resistance is high enough that it is not repulsed by the coil when it is on there alone.
 
  • #4
elegysix said:
The aluminum foil rises because the induced current and magnetic field are in the same direction as the larger ring. This means they are attracted because their magnetic fields align. However, the resistance is high enough that it is not repulsed by the coil when it is on there alone.
Ahhhh! I should have known.Thank you.
 
  • #5


The rise of the ring in Faraday's and Lenz's Law demonstration is caused by electromagnetic induction. When a magnet is moved towards a conducting material, it creates a changing magnetic field around the material. This changing magnetic field induces a current in the material, which in turn creates its own magnetic field. The interaction between these two magnetic fields results in the ring being pushed upwards.

In the last demonstration, the ring rises up because of Lenz's Law, which states that the direction of the induced current will always oppose the change that caused it. In this case, the changing magnetic field caused by the movement of the magnet induces a current in the ring. The direction of this current is such that it creates a magnetic field that opposes the original magnetic field of the magnet. This creates a repulsive force between the magnet and the ring, causing the ring to rise up.

In summary, the rise of the ring is a result of the principles of electromagnetic induction and Lenz's Law, which explain the relationship between changing magnetic fields and induced currents. This demonstration showcases the fascinating and complex interactions between electricity and magnetism, and how they can be harnessed for various applications in science and technology.
 

What is Faraday's Law?

Faraday's Law, also known as the law of electromagnetic induction, states that when a conductor is placed in a changing magnetic field, an electromotive force (EMF) is induced in the conductor. This means that a voltage is created in the conductor, which can cause a current to flow if the conductor forms a closed loop.

What is Lenz's Law?

Lenz's Law is a consequence of Faraday's Law and states that the direction of the induced EMF is always such that it opposes the change that produced it. This means that the induced current will flow in a direction that creates a magnetic field that opposes the original change in the magnetic field.

What are the practical applications of Faraday's and Lenz's Law?

Faraday's and Lenz's Law have numerous practical applications, including generators, transformers, electric motors, and induction cooktops. They are also essential principles in the study of electromagnetism and are used in the design of many electronic devices.

How are Faraday's and Lenz's Law related to each other?

Faraday's and Lenz's Law are closely related as Lenz's Law is a consequence of Faraday's Law. Both laws explain the phenomenon of electromagnetic induction, which is the creation of an EMF in a conductor due to a changing magnetic field. Lenz's Law is an extension of Faraday's Law, providing information about the direction of the induced EMF.

What are some real-life examples of Faraday's and Lenz's Law?

Some examples of Faraday's and Lenz's Law in action include the operation of generators, where mechanical energy is converted into electrical energy, and the operation of transformers, which are used to change the voltage of an AC current. Other examples include electromagnetic induction used in wireless charging and the functioning of electric motors in various household appliances.

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