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evthis
Is there a definition for the word electricity which will explain why spinning a magnet around a wire will produce a current?
Understanding Electricity: The Relationship Between Magnets and Current
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In summary, electricity is the motion of electrical charge and a magnetic field is the type of field produced by a charge in motion. According to Faraday's law, a bar magnet can induce a current due to its microscopic currents. This phenomenon can be further understood by studying the Lenard-Wiechert potentials and computing the fields. It is also worth noting that magnetostatics can exist independently of any electric field or potential.
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Faraday's law explains the second part.While the definition of a current or "electricity' is pretty useless here.
Daniel.
Daniel.
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Crosson
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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.
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.
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A charge in arbitrary motion produces an electromagnetic field.U may check the Lenard-Wiechert potentials...And compute the fields (
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That's bs.Magnetostatics exists very well,independently of any electric field/potential...
Daniel.
)Crosson said:
That's bs.Magnetostatics exists very well,independently of any electric field/potential...
Daniel.
FAQ: Understanding Electricity: The Relationship Between Magnets and Current
How do magnets and current relate to each other?
Magnets and current are closely related because moving electric charges (current) create a magnetic field, and a magnetic field can induce an electric current. This is known as electromagnetism and is the basis for many modern technologies.
What is the difference between AC and DC current?
AC (alternating current) and DC (direct current) refer to the direction in which the electric current flows. In AC, the current changes direction periodically, while in DC, the current flows in one direction. AC is used for long-distance transmission of electricity, while DC is commonly used in batteries.
How does electricity flow through a wire?
Electricity flows through a wire due to the movement of electrons. Electrons are negatively charged particles that are attracted to positively charged particles. In a wire, the electrons flow from the negative terminal (source) to the positive terminal (destination) creating an electric current.
What is the role of conductors and insulators in electricity?
Conductors are materials that allow electricity to flow through them easily, while insulators are materials that resist the flow of electricity. Conductors, such as metals, are used to carry electricity, while insulators, such as rubber, are used to protect us from electric shocks.
Why do magnets attract or repel each other?
Magnets have a north and south pole, and opposite poles attract each other, while like poles repel. This is due to the alignment of the magnetic domains within the magnet, which creates a magnetic field. When two magnets are brought close together, their magnetic fields interact, causing the attraction or repulsion.