Faraday’s law and voltage generation

AI Thread Summary
A conductor moving through a magnetic field generates an electromotive force (emf), leading to the question of whether a highly conductive liquid like seawater could similarly generate emf when moving through a magnetic field. While the principle is sound, practical applications for generating useful energy from this phenomenon have not yet been realized. Magnetohydrodynamic (MHD) drives, which utilize magnetic fields for propulsion without moving parts, represent a related concept but have not been widely implemented. Some existing technologies, such as electromagnetic speed logs for vessels, demonstrate the principle in measuring flow rates. Overall, while the theory is established, practical applications remain limited.
JimH59
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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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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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