Titlebook: Electromagnetic Theory; Prabir K. Basu,Hrishikesh Dhasmana Book 2023 The Editor(s) (if applicable) and The Author(s), under exclusive lice

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Marta Peris-Ortiz,José Álvarez-GarcíaElectric charges at rest produce an electric field (electrostatic field) and when they are in motion form electric current and thus produces magnetic field. A static magnetic field is originated from a constant current or from a permanent magnet. However, we are interested about the magnetic field produced by the current in electromagnetic theory.

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https://doi.org/10.1007/978-1-349-27625-7Upto now for static electric field, charges are at rest and the static magnetic field is due to the steady current. We have attained the following equations.

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Electromagnetic Theory Fundamentals,The varying electrical and magnetic fields propagating in space in form of waves are called Electromagnetic waves (e.m.waves).

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Static Electric Fields,Electrostatics is developed on a fundamental law, known as ‘Coulomb’s Law’. This holds for two charged spheres very small radii (small compared to the separation between them)and are immersed in an infinite homogeneous insulating medium.

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,Time Varying Fields and Maxwell’s Equations,Upto now for static electric field, charges are at rest and the static magnetic field is due to the steady current. We have attained the following equations.

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Reflection and Refraction of E.M.Waves,Till now the electromagnetic (EMI field interaction with different medium such as conductor, dielectric has been dealt to study the signal properties such as attenuation constant, velocity, impedance etc. When this EM field signal passes from one medium to another medium various phenomenon such as reflection, transmission etc. fakes place.