Motion of Electrons around the Nuclei of Atoms
- Permanent magnets operate due to electron movement around atomic nuclei.
- Only certain materials exhibit magnetism, with varying degrees of strength.
- Criteria for magnetism include:
- Atoms possessing unpaired electrons with the same spin.
- Example: Iron, with four such electrons, is conducive to magnetization.
- Material alignment:
- Individual atom magnetism is insufficient; alignment of countless atoms’ orientations is necessary.
- Without alignment, the overall magnetic field cancels out.
- Stability at room temperature is required for sustained orientation.
- Result:
- Permanent magnet formation leads to a ferromagnetic state.
- Temporary magnetism:
- Some materials become magnetic temporarily in the presence of an external magnetic field.
- Electron spins align within the field, dissipating upon its removal.
- Such materials are termed paramagnetic.
Magnetic Field Strength
Magnetic field is defined as the region around a magnet which influences the other magnets. i.e. If we place a test magnet near a powerful magnet it experiences some force due to the powerful magnet the region close to the powerful magnet is called the magnetic field of the magnet. It is similar to the electric field of the charged particle and is represented by the magnetic field lines. The denser the magnetic field lines the higher the strength of the magnetic field.
Table of Content
- What is a Magnetic Field?
- Magnetic Field Strength Formula
- History of Magnetic Field
- Representation of Magnetic Field
- Properties of Magnetic Field Lines
- Magnetic Field Intensity
- How does a Magnetic Field Originate?
- Magnetic Field created by a Current Carrying Conductor
- Motion of Electrons around the Nuclei of Atoms
- Magnetic Field by Motion of Electrons around the Nuclei of Atoms
- Solved Example on Magnetic Field Strength
Let’s learn about magnetic field lines formula, derivation, and others in detail in this article.