Difference between Permanent Magnet and Electromagnet
Permanent Magnet is the one which naturally produce magnetic field around it while electromagnet is the one which produces magnetic field due to the effect of electric current. The key differences between Permanent Magnet and Electromagnet are listed in the following table:
Permanent Magnet vs Electromagnet |
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---|---|---|
Feature |
Permanent Magnet |
Electromagnet |
Source of Magnetism |
Inherent magnetic properties of material. |
Magnetic field created when an electric current flows through a coil of wire. |
Magnetism Control |
Fixed magnetism; cannot be easily altered. |
Magnetism can be controlled by adjusting the electric current in the coil. |
Power Source |
Does not require an external power source. |
Requires an external power source (electric current) to maintain its magnetic field. |
Magnetic Strength |
May have varying magnetic strengths. |
Can be designed for variable and strong magnetic fields, depending on the current flowing through the coil. |
Applications |
Commonly used in everyday items (e.g., refrigerator magnets). |
Widely used in devices where a controllable magnetic field is needed (e.g., electric motors, MRI machines). |
Examples |
Bar magnets, horseshoe magnets, neodymium magnets. |
Solenoids, electric cranes, magnetic locks. |
Permanent Magnet
Permanent Magnets are materials that can create a magnetic field even if the magnetization force is removed. Unlike other magnets, it keeps its magnetic power all the time. They are made of hard ferromagnetic materials, for example, Ferrite and Alnico.
Distinguished by their natural capacity to generate a magnetic field, permanent magnets effortlessly attract materials such as iron and steel. In this article, we will learn what is Permanent Magnets, their properties, applications, advantages, and disadvantages. We will also learn what how a Permanent Magnet differ from Non Permanent Magnet and Electromagnet.
Table of Content
- What are Permanent Magnets?
- Properties of Permanent Magnet
- Magnetic Behaviour of Permanent Magnet
- Difference between Permanent Magnet and Electromagnet
- What is Non-Permanent Magnet?
- Permanent Magnets Applications