Electromagnetic force is one of the four fundamental forces of nature that governs the behavior of charged particles. It is also the force that holds atoms and molecules together, allowing for the formation of matter.

**Definition**
Electromagnetic force is the force that is exerted between electrically charged particles or objects. It is a fundamental force of nature that is carried by photons and is responsible for the interaction between electrically charged particles or objects.

**Properties**
- Electromagnetic force is both attractive and repulsive. Like charges (positive-positive or negative-negative) repel each other, while opposite charges (positive-negative) attract each other.
- The strength of electromagnetic force is determined by the distance between the charged particles or objects and the magnitude of their charges.
- Electromagnetic force can act over long distances, but it weakens as the distance between the charged particles or objects increases.
- Electromagnetic force is responsible for the behavior of electromagnetic waves, such as light and radio waves.

**Applications**
- Electromagnetic force is responsible for the behavior of electric motors and generators, which are used in a wide range of applications, from household appliances to industrial machinery.
- Electromagnetic force is also used in medical imaging technologies, such as magnetic resonance imaging (MRI) and computed tomography (CT) scans.
- Electromagnetic force is used in telecommunications technologies, such as radio and television broadcasting and satellite communications.

In conclusion, electromagnetic force is a fundamental force of nature that plays a crucial role in the behavior of charged particles and the formation of matter. It is also responsible for a wide range of applications in various fields, including engineering, medicine, and communications.