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eranb2
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what must change?
the speed of the current or the direction of it?
thanks
the speed of the current or the direction of it?
thanks
eranb2 said:what must change?
the speed of the current or the direction of it?
eranb2 said:… how a current influences a single charge?
The current of one wire will cause a magnetic field, which affects the charges (and current) in the other wire, and vice versa.eranb2 said:two wires with currents to same direction are attracted.
how a current influences a single charge?
Astronuc said:The current of one wire will cause a magnetic field, which affects the charges (and current) in the other wire, and vice versa.
A moving charge q, in a magnetic field will be subject to a force F = q (v x B) where x denotes the cross product.
Redhat said:Alternatively, the moving charge q sees an increase in the charge of the oppositely charged ionic lattice of the other wire. Since q is moving it "sees" the wire's length contract due to SR which increases the wire's ionic lattice's charge density.
The difference in charge density creates an electric field which pulls the two wires together via F = qE. The magnitude and direction of this force is exactly the same as the Lorentz force mentioned above.
This shows that magnetism is simply an effect of changing electric fields.
AC, or alternating current, creates magnetism through the process of electromagnetic induction. This occurs when an alternating current flows through a conductor, creating a constantly changing magnetic field around the conductor. This changing magnetic field can then induce a magnetic field in nearby conductors or ferromagnetic materials.
No, both AC and DC (direct current) can create magnetism. However, AC is more commonly used for this purpose due to its ability to easily generate strong and rapidly changing magnetic fields.
The relationship between AC and magnetism is based on the principles of electromagnetism. AC creates a changing magnetic field, which can then induce a current in nearby conductors or produce a magnetic force on ferromagnetic materials.
Yes, AC magnetism can be controlled and manipulated through various methods such as adjusting the frequency and amplitude of the alternating current. This allows for the creation of different strengths and patterns of magnetic fields.
AC magnetism has many practical applications, including electric motors, generators, transformers, and induction heating. It is also used in magnetic resonance imaging (MRI) technology for medical diagnostics and in particle accelerators for scientific research.