Understanding Electricity: The Relationship Between Magnets and Current

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The discussion centers on the definition of electricity and its relationship to magnetism, specifically how spinning a magnet around a wire can generate an electric current. Electricity is defined as the motion of electrical charge, referred to as "current" in physics. The magnetic field is produced by a charge in motion, and it represents how electric fields change due to relative motion. The conversation highlights that understanding the interaction between electric and magnetic fields is crucial, with Faraday's law explaining the generation of current. However, there is contention regarding the necessity of electric fields in magnetostatics, with some participants arguing that magnetostatics can exist independently of electric fields.
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Is there a definition for the word electricity which will explain why spinning a magnet around a wire will produce a current?
 
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Faraday's law explains the second part.While the definition of a current or "electricity' is pretty useless here.

Daniel.
 
Electricity: The motion of electrical charge (called "current" in physics)

Magnetic Field: The type of field produced by a charge in motion.

Magnetic field is just our name for the way electric fields change due to relative motion. The fact that a bar magnet can induce a current would seem much more natural if your eyes could see the the microscopic currents going on in the bar magnet.
 
A charge in arbitrary motion produces an electromagnetic field.U may check the Lenard-Wiechert potentials...And compute the fields (:devil:)

Crosson said:
Magnetic field is just our name for the way electric fields change due to relative motion.

That's bs.Magnetostatics exists very well,independently of any electric field/potential...

Daniel.
 

Thread 'What determines if wave components are independent vs coherent?'

I'm working through something and want to make sure I understand the physics. In a system with three wave components at 120° phase separation, the total energy calculation depends on how we treat them: If coherent (add amplitudes first, then square): E = (A₁ + A₂ + A₃)² = 0 If independent (square each, then add): E = A₁² + A₂² + A₃² = 3/2 = constant In three-phase electrical systems, we treat the phases as independent — total power is sum of individual powers. In light interference...
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