# Magnetic Field from Protons vs Electrons

• General Scientist
In summary, when an electron or proton moves in a circle in a magnetic field, it produces a magnetic field according to Biot-Savart's law. The direction of the magnetic field for an electron is opposite to the direction given by the velocity and position vectors, while the direction for a proton is the same.
General Scientist
If an electron is moving in a circle in a magnetic field, it produces a magnetic field in accordance to the right hand rule. If a proton is moving in a circle in a magnetic field, would it produce a magnetic field in accordance to the left hand equivalent to the right hand rule.

General Scientist said:
If an electron is moving in a circle in a magnetic field, it produces a magnetic field in accordance to the right hand rule. If a proton is moving in a circle in a magnetic field, would it produce a magnetic field in accordance to the left hand equivalent to the right hand rule.
You are correct as magnetic fields are created by moving charges, and the example would satisfy the criteria. Although, I assume it would be tiny compared to the surrounding magnetic field. The right hand rule would work for a proton.

The magnetic field for both is described by Biot-Savart's law. ## \vec{B}=\frac{\mu_o}{4 \pi} \frac{q \vec{v} \times\vec{r}}{|\vec{r}|^3} ##. With a negative charge on the electron, its magnetic field is opposite the direction given by ## \vec{v} \times \vec{r} ##.

berkeman
The magnetic field for both is described by Biot-Savart's law. With a negative charge on the electron, its magnetic field is opposite the direction given by ## \vec{v} \times \vec{r} ##.
So the positive charge of a proton would mean the magnetic field is just ##\vec{v} \times \vec{r}##?

General Scientist said:
So the positive charge of a proton would mean the magnetic field is just ##\vec{v} \times \vec{r}##?
See the part I added to post 3=the formula for ## \vec{B} ##.

See the part I added to post 3=the formula for ## \vec{B} ##.
Ok. Thank you.

## What is a magnetic field?

A magnetic field is a region of space where a magnetic force can be detected. It is created by moving electric charges, such as electrons and protons.

## What is the difference between the magnetic field from protons and electrons?

The magnetic field from protons and electrons is based on their charge and motion. Protons have a positive charge and electrons have a negative charge, and both particles have a spinning motion. This results in different magnetic fields, with protons having a stronger field due to their larger mass.

## How do protons and electrons create a magnetic field?

Protons and electrons both have an intrinsic property called spin, which is a type of angular momentum. This spinning motion of the particles creates a magnetic dipole moment, which is the source of the magnetic field.

## Can the magnetic field from protons and electrons be manipulated?

Yes, the magnetic field from protons and electrons can be manipulated by external magnetic fields. This is the basis for technologies such as magnetic resonance imaging (MRI) and particle accelerators.

## How does the magnetic field from protons and electrons affect materials?

The magnetic field from protons and electrons can influence the behavior of materials that have magnetic properties. For example, magnetic fields can cause magnetic materials to align and attract or repel each other. This is the principle behind magnets and their ability to attract certain metals.

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