Magnetic field of a single charged particle

In summary, two charged particles, q1 and q2, exist in the universe. q1 is moving relative to q2 at velocity v. According to the concept of magnetic fields, a moving charge (q1 in this case) creates a magnetic field. The magnetic field created by q1 would be circular in shape, similar to the ones made by a current-carrying wire. Its strength would vary based on the distance and direction from the charge. This concept is further explained and demonstrated through the provided link.
  • #1
yrjosmiel
53
5
Let's say that there's nothing else in this universe except for 2 charged particles: q1 and q2.
q1 is moving relative to q2, moving at velocity v. I've read that a magnetic field is made by a moving charge. In this case, the moving charge q1 is moving relative to q2. What would the magnetic field made by q1 look like? Would it look circular, like the ones made by a current-carrying wire?
 
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  • #3
It would be circular, yes.
Is it circular just because it is or is there some other reason why?
 

FAQ: Magnetic field of a single charged particle

What is a magnetic field?

A magnetic field is a region of space around a magnet or a moving electric charge in which magnetic forces can be detected.

How is the magnetic field of a single charged particle calculated?

The magnetic field of a single charged particle can be calculated using the formula B = (µ_0/4π) * (q*v)/r, where B is the magnetic field strength, µ_0 is the permeability of free space, q is the charge of the particle, v is its velocity, and r is the distance from the particle.

What factors affect the strength of a magnetic field?

The strength of a magnetic field is affected by the charge and velocity of the particle, as well as the distance from the particle and the permeability of the medium it is traveling through.

How does the direction of motion of a charged particle affect its magnetic field?

The direction of motion of a charged particle affects the direction of its magnetic field. If the particle is moving in a straight line, the magnetic field will form circles around the particle. If the particle is moving in a curved path, the magnetic field will be tangent to the path at any given point.

Can a single charged particle have a magnetic field without being in motion?

No, a single charged particle must be in motion in order to have a magnetic field. A stationary charged particle only has an electric field. It is the motion of the particle that creates a magnetic field.

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