Time Varying Fields and Maxwells Equations
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• Let us consider series circuit consisting resistor, inductor and capacitor driven by a generator Vg as shown in the Fig. 9.9.1 (a). Its equivalent representation is as shown in the Fig. 9.9.1 (b).
Time Varying Fields and Maxwells Equations
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• In general, any complex number m can be written as, m = a + jb = r ∠ θo .... (9.8.1) or m = rejθ = r (cos θ + j sin θ) .... (9.8.2)
Time Varying Fields and Maxwells Equations
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• Let us now study the behaviour of these potentials when the fields are time varying.
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
The Maxwell's equations are useful in determining the conditions at the boundary surface of the two different media. We can apply the concepts of linear, isotropic and homogeneous medium.
Static Fields and Time Varying Fields
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• The valuable work done by James Clerk Maxwell helped in discovering electromagnetic waves. The time varying fields are involved in the experiments of Faraday, Hertz and the theoretical analysis done by Maxwell.
Time Varying Fields and Maxwell's Equations
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• In general, the electric charge possesses a basic important property that it can not be created nor distroyed. In other words if the charge disappears from one point, then it must reappear at some other point. This basic property is called conservation of charge.
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• For static electromagnetic fields, according to Ampere's circuital law, we can write,
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• In year 1820, Prof. Hans Christian Oersted demonstrated that a compass needle deflected due to an electric current. After ten years, Michael Faraday, a British Scientist, proved that a magnetic field could produce a current.
Time Varying Fields and Maxwell's Equations
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
• In the previous chapters, we have studied basic concepts in electrostatic and magnetic fields. These fields do not change with respect to time.
Electromagnetic Theory
Subject and UNIT: Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwells Equations
Electromagnetic Theory: Unit IV: Time Varying Fields and Maxwell's Equations : Syllabus, Contents
Magnetic Forces, Magnetic Materials and Inductance | Electromagnetic Theory
Subject and UNIT: Electromagnetic Theory: Unit III: (b) Magnetic Forces, Magnetic Materials and Inductance
Electromagnetic Theory: Unit III: (b) Magnetic Forces, Magnetic Materials and Inductance : University Questions with Answers (Long Answered Questions)
Magnetic Forces, Magnetic Materials and Inductance | Electromagnetic Theory
Subject and UNIT: Electromagnetic Theory: Unit III: (b) Magnetic Forces, Magnetic Materials and Inductance
Electromagnetic Theory: Unit III: (b) Magnetic Forces, Magnetic Materials and Inductance : Two Marks Questions with Answers