Applications of Electromagnetism in Engineering

electromagnetic compatibility engineering

Modern technologies have evolved immensely and have answered some interesting questions about human life that must be comprehended. Innovative engineering concepts have changed the world and given modern solutions to diverse industries such as infrastructure, automobiles, wireless communication systems, etc. The amenities provided are the result of amazing scientific discoveries. One such amazing field is Electromagnetism, a part of physics that studies the interactions of an object’s magnetic and electric fields.  

This heavily influenced the other fields and helped develop diverse concepts for comprehending the various phenomena around us. The electromagnetic concepts can be applied to various fields, including communication, transportation, industrial, and medical. The application of electromagnetic energy is so vast that it covers – power generation, transformers, electrical machines, and others. This article unfolds the various dynamics of Applications of Electromagnetism in Engineering.

What is Electromagnetism 

Discovered in the 19th century, electromagnetism is a part of physics and helps understand the force that interacts with gravity and other areas. It is a science governed by “Faraday’s law of induction.” The electromagnetic field is considered modern science, which helps us know that an electromagnetic field is created when an electric current passes through it. The current’s direction helps us know the rotation of the created magnetic field. Apart from this, the more the current’s strength and length are, the more electromagnetic force will be created. And any change in the magnetic may result in producing electricity. 

Advantages of studying electromagnetism 

  1. Electromagnetic fields are very necessary; however, they are not permanent magnets. Increasing the amount of electricity may contribute to a better and more magnetic field.  
  2. Managing the current flow and direction can help change the magnets’ poles. Many industries are using the concepts of electromagnetic and making magnetic separators. By this principle, iron is separated from a heap of scrap. 
  3. The use of electromagnets is popular across the industrial and research domain as it helps them create controllable magnetic flux, which can be switched on, off, or reversed as required. 
  4. Various devices use electromagnetic and serve people’s day-to-day needs. Among such are generators, loudspeakers, computer hard disks, MRIs, accelerators, and many more. 
  5. Modern technologies are highly in need of electromagnets, which help them store and transmit information. While also they engage in developing through research and making it more helpful. 
  6. Moreover, electromagnets are inexpensive and easily made, making them perfect for various industrial purposes. The industries are using this technology to make their product or service enhanced, this also helps them in improving business outcomes. 

Application of electromagnetism

When the two words electricity and magnetic amalgamated in 1873, it created a new term, electromagnetic, which has gained popularity and helped develop strong equipment that solves various life challenges. The electromagnetic term has revolutionized the engineering field and given a broader view of its various applications. Daily, we can observe the wide use of electromagnetic equipment to solve various challenges. The application ranges from using it as a domestic home appliance to numerous research applications. 

1. Magnetic speakers

Most people use TV and radio in their homes, among the best examples of electromagnetic devices based on permanent magnetic speakers. Electromagnetic principles are applied to radios and TV. The technology is used to transform electrical waves into audible sounds. The concept works from behind when the electricity passes through the magnetic coil attached to the permanent magnet, the magnetic field generates, and the speakers work. Then this paves the way for vibrations, and cone-shaped structures amplify the sound. This is how we hear the sound. 

2. Maglev Trains

Known as high-speed training, Maglev trains are quick and one of the safest travel methods. The frictionless motion of maglev trains (apart from air resistance) supports achieving a high speed of up to 300 mph. All Magnets have north and south poles; as we all know, that magnet attracts in opposite directions. While similar poles repel, this is the basic foundation of maglev training, where the repulsive nature of magnets helps the train run faster. This principle helps in building and creating strong and temporary magnets. Because passing an electric current through wire coils helps produce a magnetic field. 

3. AC Generators

Generators are popular for converting mechanical energy into electricity. When electrostatic generators were used, they were highly inefficient as there was no relationship between electricity and magnetism. Because those generators were not showing results and were inefficient, thus they were never put to use. Later on, Faraday’s law of electromagnetic induction was later used and made AC generators, which became the way to produce electricity. When a conductor is electrically charged, it creates a magnetic field. And when a conductor is placed through a magnetic field – electricity produces. This process is called Electromagnetic Induction which is widely popular. 

4. Home appliances

Electric appliances used in the home are based on the principle of electromagnetism. The basic working of a fan is that electromagnetic induction helps keep the motor rotating and helps the blades to run. Moreover, when electromagnetic forces the coil, it creates flux, and the doorbell from inside gets energized and starts sounding. Our daily appliances include electric fans, magnetic locks, induction cookers, etc. 

5. Medical field

The medical field is one of the important areas where electromagnetic forces work. MRI scan is the best example of Magnetic Resonance Imaging, where electromagnets scan the entire body and find the unusual tiny substance that can cause harm. The electromagnetism of MRI helps doctors identify the issue, and they work accordingly. 

6. Communication Devices and Power Circuits

It wouldn’t have been possible to call or use the internet on the phone if electromagnetism had not been discovered. Electromagnetic pulses help send signals and make daily life easier and more useful. 

Engineering and electromagnetism

Engineering is an interesting field that helps deal with many real-life challenges. The Applications of Electromagnetism in Engineering are widely used, and various research has also been done in this regard. You can use several books to learn the concepts of electromagnetism and gain profound knowledge and understanding. However, due to its high emphasis on complex and complicated concepts, you may need help with electromagnetism textbook solutions. Hence you can refer to a learning platform for the same. The domain is highly interesting and will help ignite curiosity for further learning. 

To Sum it Up

This article has shown you some of the important electromagnetic compatibility engineering examples. The comprehensive list helps you determine the working of various equipment and devices. Apart from the devices mentioned above, various others are also essential. However, you can delve deeper into physics by learning various textbook solutions manuals and finding the most appropriate answer for your textbook.

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