Question

How do moving electric charges create magnetic fields?

Answer 1

Explanation:

1. Every time an electric charge moves, a magnetic field is generated. Just as an electric current through a wire creates a magnetic field, so does the rotation and rotation of the nucleus of an atom.
2. Magnetic force lines move around charged particles such as electrons, protons, and ions when they are in motion. Electrons in motion create an electric current flowing through a wire, so the wire is surrounded by a magnetic field.
3. A current flowing in a straight path, such as a long, straight wire, is the most basic current we can think of.
4. Such a current-carrying wire actually forms circular loops of the magnetic field around itself, which decreases the field strength as it moves further away.
5. You can use your right hand to determine the orientation of the area. If you curl them and point your thumb in the direction of the stream your fingers will point in the direction of the field.
6. An electric current produces a magnetic field. This is possible when an electric charge is in motion. When the electric charge is at rest, no magnetic field is produced.
7. When an atom spins and spins its nucleus around it, a magnetic field is created. The rotation and orbital axes of the electric charge also determine the direction of the magnetic field.
8. A current-carrying conductor must be surrounded by a circle of several magnetic compass needles.

Electrical current flow direction:

1. Although electrons migrate to the positive $(+)$ terminal in the wire despite having a negative $(+)$ electric charge, the electric current is generally assumed to move from positive $(+)$ to negative $(-)$. Although the decision was regrettable and made many years ago, you should be aware of it.
2. The magnetic field formula contains the constant μ0.

This is known as permeability of free space and has a value ${\mu }_0=4\pi \times {10}^{-7}\left(\frac{T\cdot m}{A}\right)$. Besides, the unit of a magnetic field is Tesla $\left(T\right)$.