Help Explain Electromagnetic Induction Paradox

In summary, the concept of magnetism can be explained through the example of two wires with different currents that attract or repel each other due to the different amounts of protons and neutrons they "see". This is known as electromagnetic induction. By using the rules of relativity and the electric force, we can understand how a magnetic force on a moving charge can also be seen as an electric force in its own rest frame. This is demonstrated in a string of charges being attracted or repelled by another wire depending on their direction of movement.
  • #1
TheTankEngine
17
0
ok, i just can't figure this one out.

you have heard of the example of the 2 wires, and depending on their currents, they will attract or repel each other because they "see" different amounts of protons/neutrons. so, this is what we call "magnetism"

I just can't tie in electromagnetic induction with this. If someone can explain this in these terms, I would be soooo thankful.

(try to use these rules (because I am in 8th grade): you may only use the 2 wires/loops of conductors situation, and you may only use relativity and the electric force in your explanation)

Pleaase try, but is you can't, try to take it to the next fundamental step without using "flux" or any presumed facts other than what I have already explained

Any replies are welcome!
 
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  • #2
Check out this page, it explains how we can use relativity to show that a magnetic force on a charge which is moving in one frame can be re-interpreted as a purely electric force on the same charge in its own rest frame:

http://physics.weber.edu/schroeder/mrr/MRRtalk.html

The page shows why a string of charges in one wire will be attracted towards the other wire if they are moving in the same direction as the same type of charge in the other wire, and repelled if they are moving in the opposite direction, as seen in this diagram:

fig7.gif
 

Related to Help Explain Electromagnetic Induction Paradox

1. What is electromagnetic induction paradox?

Electromagnetic induction paradox refers to the apparent contradiction between Faraday's law of induction and Lenz's law. According to Faraday's law, a change in magnetic flux through a circuit induces an electromotive force (EMF) in the circuit. However, Lenz's law states that this induced EMF opposes the change in magnetic flux, leading to a seemingly paradoxical situation.

2. How does electromagnetic induction work?

Electromagnetic induction occurs when a changing magnetic field induces an electric current in a conductor. This is achieved through the movement of electrons within the conductor, which creates an electric field. The changing magnetic field causes the electrons to move, thus producing an induced current in the conductor.

3. What causes the electromagnetic induction paradox?

The apparent contradiction in electromagnetic induction is caused by the opposing effects of Faraday's law and Lenz's law. While Faraday's law predicts that a changing magnetic field results in an induced EMF, Lenz's law states that the induced EMF will oppose the change in magnetic flux.

4. How is the electromagnetic induction paradox resolved?

The electromagnetic induction paradox is resolved by understanding that both Faraday's law and Lenz's law are correct. The seemingly paradoxical situation arises because of the different perspectives used to interpret the phenomenon. When viewed from the perspective of energy conservation, Lenz's law is applicable, while Faraday's law is more relevant when considering the induced EMF.

5. What are some real-world applications of electromagnetic induction?

Electromagnetic induction has many practical applications, including generators, transformers, and induction cooktops. Generators use electromagnetic induction to convert mechanical energy into electrical energy, while transformers use it to step up or step down the voltage of an alternating current. Induction cooktops use electromagnetic induction to heat cookware without direct contact, making them faster and more efficient than traditional stovetops.

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