Here are the steps for a simple way to determine the direction of the magnetic force on a wire:

Determining the direction of the magnetic field on a wire is critical to understanding the principles of electromagnetism and performing related experiments. Here are the steps for a simple way to determine the direction of the magnetic force on a wire:

In the case of DC current:

1.Right-hand spiral rule:

Let your right hand hold the wire, with your thumb pointing in the direction of the current (that is, the positive direction of the current), and the direction in which your four fingers are bent indicates the direction of the magnetic field. The thumb points in the direction of the current, and the direction in which the four fingers are bent is the direction of the magnetic field.

2.Ampere’s Surround Law (Ampere’s Law):

In the case of a straight current, Ampere’s law of encirclement states that the direction around the wire is the direction of the magnetic field formed. Standing in the direction of the current and observing, the magnetic field is clockwise or counterclockwise.

In the case of AC current:

Since the direction of the alternating current changes in time, the magnetic field changes accordingly. Determining the direction of the magnetic field at a specific moment requires more complex methods and calculations, such as using the right-hand spiral rule to determine the direction of the magnetic field at a specific point in time.

Things to note in practical applications:

1.Use a tool such as a magnetic field sensor or a magnet compass to measure the direction and strength of the magnetic field around the wires to more accurately determine the direction of the field.
2.When doing any magnetic field experiments, handle electrical currents carefully to ensure safety and avoid potential electric shock or other hazards.