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The EMFT, or Electromagnetic Field Theory, is a branch of physics that studies the behavior of electromagnetic fields and their interactions with matter. It encompasses concepts such as electric and magnetic fields, electromagnetic waves, and their applications in technology, including telecommunications and power generation. EMFT is grounded in Maxwell's equations, which describe how electric and magnetic fields are generated and altered by charges and currents.
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Difference between field theory and circuit theory?
Circuit Theory: As the name suggests, circuit theory deals with electrical circuit. An engineer can predict the performance of complicated electrical networks with the help of circuit theory. But this theory has certain limitations like :It cannot be applied in free space.It is useful only at low frequencies.This theory is unsuccessful in explaining the radiation of electromagnetic waves into space in radio communications.It cannot be used to analyse or design a complete communication system. Example: Radio Communication System.Electromagnetic Field Theory. Although electromagnetic Field Theory (EMFT) is complex in comparison with circuit theory but EMFT is simplified by using appropriate mathematics. This theory deals with E and H vectors, whereas circuit theory deals with voltages and currents.This theory has following advantages in comparison to circuit theory:It is also applicable in free space.It is useful at all frequencies, particularly at high frequencies,The radiation effect can be considered.This theory can be used to analyse or design a complete communication system. Example: Wireless Communication, Radio Communication.
What is the Relation between Field Theory and Circuit Theory?
Circuit Theory: As the name suggests, circuit theory deals with electrical circuit. An engineer can predict the performance of complicated electrical networks with the help of circuit theory. But this theory has certain limitations like :It cannot be applied in free space.It is useful only at low frequencies.This theory is unsuccessful in explaining the radiation of electromagnetic waves into space in radio communications.It cannot be used to analyse or design a complete communication system. Example: Radio Communication System.Electromagnetic Field Theory. Although electromagnetic Field Theory (EMFT) is complex in comparison with circuit theory but EMFT is simplified by using appropriate mathematics. This theory deals with E and H vectors, whereas circuit theory deals with voltages and currents.This theory has following advantages in comparison to circuit theory:It is also applicable in free space.It is useful at all frequencies, particularly at high frequencies,The radiation effect can be considered.This theory can be used to analyse or design a complete communication system. Example: Wireless Communication, Radio Communication.Reference: This article is referred from my authored book "concepts of electromagnetic field theory". In case of any problem, please post in the comment section.
Why is electromagnetic energy important?
This is important because it helps forces of electrons move across the conductor. This happened when the magnetic field changes.
