Applications of Electromagnetic Field
- Home Appliances – Kitchen appliances such as induction cookers, microwave ovens, bread toasters and electric grinders use electromagnetism for their operations. Another important application is that we all have TV, radio use loudspeakers these devices consists of electromagnet which is actually attached to the cone surrounded by the magnetic flux produced by magnets, Electric fans and other cooling systems use electric motors which is moved by the magnetic field produced by electric current.
- Medical Terminologies – Mostly Gamma rays are used for medical purposes with high frequency. EMF with frequency that range from 0 to 300 GHz can be used for therapeutic and diagnostic purposes. In MRI scans, medical appliances works based on electromagnetism can scan minute details of human body.
- Communication Systems – High frequency radio waves used for transmission of energy over long distances through electromagnetic waves. Consider an mobile phone, here the sound energy is converted into electromagnetic energy and electromagnetic waves travel forth and come back through using radio transmitters.
- Electric Trains – High speed trains uses electromagnets to develop the speed . Here the train will float due to electromagnetic suspension(EMS) and electromagnetic dimension (EDS) therefore these type of systems need large electrical power source.
- Ultraviolet Rays – It helps to learn more about space science and galaxies for astronomers because of shorter wavelengths.
What is Electromagnetic Field ?
As we all know, a field is nothing but a physical quantity that’s assigned to every point in space. The electromagnetic field is a combination of electrical and magnetic phenomena that exist in space and it is also created by the motion of charges (electric field) which creates a magnetic field. In simple terminology electromagnetic field is a wave that transports electromagnetic energy with the speed of light. It is a scalar quantity that has only a magnitude not direction associated with it. It is a field described by classical thermodynamics. Maxwell’s law and Lorentz’s force law describe how electric charges constitute current and interact with a magnetic field. Here the important point to catch is without electromagnetic waves we can’t generate electromagnetic fields so both these terms are dependent on each other.
Table of Content
- Electromagnetic Field
- Electromagnetic Waves
- Equations
- Properties
- Categorization
- Mathematical Representation
- Properties
- Applications
- Electric Field (E) Vs Magnetic Field (B)
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