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Electromagnetic Fields

Electromagnetic Fields for GATE Electrical and Electronics Engineering, one topic per lesson: the theory in plain words, the formulas, a solved example, and GATE-style questions (MCQ, MSQ and NAT) whose numerical answers are recomputed by a program when the site is built.

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1Static Fields

  1. Electrostatics: Coulomb, Gauss and CapacitanceCoulomb's law, electric field of point, line and sheet charges, Gauss's law, electric potential, energy, dielectrics and boundary conditions, and capacitance of common geometries.
  2. Magnetostatics: Biot-Savart and Ampere's LawBiot-Savart law, magnetic field of a wire, loop and solenoid, Ampere's circuital law, magnetic flux and force on conductors, magnetic materials, boundary conditions and inductance.

2Time-Varying Fields

  1. Faraday's Law and Maxwell's EquationsFaraday's law and Lenz's law, motional and transformer EMF, displacement current, Maxwell's equations in integral and point form, Poynting vector and basic wave propagation.