Electric charge is a measure of the elementary particles that enable electrical and magnetic interactions. Electric charge, is the basis for Coulomb Law, and…
Category: Electromagnetic Fields and Waves
Electromagnetic Fields and Waves: Preface
Aim of the study element
To explain the basic concepts of electrostatics, magnetism, electromagnet waves and fields, and to use this knowledge to solve complex electrical engineering problems, electrical devices and materials analysis.
Having successfully completed this element you will be able:
- Understand and use the concepts of electrostatics.
- Understand and use the concepts of magnetism.
- Analyse electrical and magnetic
- Use main electro- and magnetostatic rules and theorems applied to real situations.
- Apply Maxwell equations to circuits.
- Use mathematical tools for circuits in an electromagnetic environment.
- Electric field – Columb law.
- Gauss theorem.
- Work in electrostatic fields.
- Conductors in electrostatic fields.
- Electric fields in insulators.
- Magnetic fields in a vacuum.
- Magnet induction.
- Electromotive force.
- Magnetic fields in compounds.
- Maxwell theory.
The Coulomb Law and superposition principle can lead to divergence theorem which is valid for bilateral, axial and spherical charged objects. Let’s divide the…
Electrostatic field and potential difference
We know how to find the potential difference between two points in the electrostatic field: φ1-φ2=∫12Eldl Let’s find out the reverse dependence - electrostatic…
Conductors in the external electric field. Faraday’s law
This post is about Fardey's Law and conductor's behaviour and features in the external electric field. Let’s consider a case when the neutral conductor…
Capacitors and capacitance
A capacitor is a system consisting of a two conductors, where an isolated electric field is created between two equal conductors , opposite charges.…
Energy of a capacitor and an electric field
Elementary work of external forces to move charge dq in electric field of a capacitor dA=dq*(φ1-φ2)=dqqC Total work is A=∫0QdqqC=Q22C this work determines total…
We will cover the topic of dielectrics in the Electronic Materials chapter in detail. Here is a brief explanation of the main terms about…
In this chapter we will cover magnetic interaction. Magnetic interaction shows how charged particles are interacting with each other. A charge moving in a…
The scientist Ampere has empirically discovered the interaction force for two parallel wires, dependent on the force being reversely perpendicular to the distance between…
Magnetic induction vector circulation
There are two methods of magnetic induction B calculation. The first method is using the Biot-Savart-Laplace and induction superposition principle. The second method is…