Faraday’s law and voltage generation

In summary, the conversation discusses the potential for highly conductive liquids, such as sea water, to generate an electromotive force (emf) when moving through a magnetic field. This concept is similar to the use of magnetic fields to propel ships through the water, known as a magnetohydrodynamic drive (MHD accelerator). While there are some practical applications, such as a speedometer for ships, the idea of using this technology for powering vessels has yet to be implemented.
  • #1
JimH59
1
1
If a conductor moving through a magnetic field generates an emf, which it does, COULD a highly conductive liquid (eg: sea water) moving through said field (like a magnetic flowmeter measuring flow rate is used) generate and would it be enough to be useful?
 
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  • #3
There is a different, but closely related situation (magnetohydrodynamic drive or MHD accelerator), where magnetic fields are used to propel ships with no moving parts:
Screen Shot 2022-04-20 at 9.12.24 AM.png


Screen Shot 2022-04-20 at 9.17.01 AM.png

Some one who knows more about this stuff could give a better explanation of this than I could.

The Russian sub in "The Hunt for Red October" was supposed to be powered by something like a magneto-drive.
Screen Shot 2022-04-20 at 9.21.49 AM.png
 
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1. What is Faraday's Law?

Faraday's Law is a fundamental principle in physics that states that a changing magnetic field will induce an electric current in a conductor.

2. How is voltage generated according to Faraday's Law?

Voltage is generated when there is a relative motion between a conductor and a magnetic field, causing the magnetic flux through the conductor to change. This change in flux induces an electric field, which in turn creates a potential difference or voltage.

3. What factors affect the magnitude of the induced voltage?

The magnitude of the induced voltage depends on the rate of change of the magnetic field, the number of turns in the conductor, and the strength of the magnetic field.

4. Can Faraday's Law be used to generate electricity?

Yes, Faraday's Law is the basis for the functioning of electric generators, which convert mechanical energy into electrical energy.

5. How is Faraday's Law related to electromagnetic induction?

Faraday's Law is the basis for the phenomenon of electromagnetic induction, which is the production of an electromotive force (EMF) in a conductor due to a changing magnetic field. This process is the underlying principle behind many electrical devices and technologies.

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