How does rotating a magnet affect the magnetic field?

AI Thread Summary
Rotating a rare Earth magnet affects the magnetic field by causing the magnetic field pattern to rotate as well, leading to a time-varying magnetic induction. According to Faraday's law, this variation induces current in the solenoid coil, which can be explained through the presence of an electric field. The experiment resembles the principles of electric motor design, where the interaction between magnetic fields and electric currents is fundamental. Understanding these dynamics can provide insights into the voltage generated in the coil based on the speed of rotation. The relationship between rotation speed and induced voltage is a key focus of the experiment.
kvyn
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I'm doing an experiment on the effect of the speed of rotation of a rare Earth magnet on the voltage generated in a solenoid coil. I was wondering, how does rotating the magnet affect the magnetic field?

The experiment setup is similar to the one below:
Untitled_4.png
 
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kvyn said:
I'm doing an experiment on the effect of the speed of rotation of a rare Earth magnet on the voltage generated in a solenoid coil. I was wondering, how does rotating the magnet affect the magnetic field?

The experiment setup is similar to the one below:
Untitled_4.png

The magnetic field pattern will rotate with the magnet, thus making the magnetic induction variable in time. From Faraday's law, we expect current to be induced in the coil. We explain this current as due to electric field. So we think of variable magnetic field to be necessarily accompanied with electric field.
 
Your experiment sounds like a form of electric motor. Analyses of electric motor design should be adaptable to describe your experiment.
 

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