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Important Questions for "electromagnetic theory":

[1]

  1. Write down the electromagnetic wave equation and its general solution with clear meaning of terms used.
  2. Write all four Maxwell's equations with meaning of symbols used. Derive the equation of continuity (div j + /t = 0).
  3. Derive an expression for potential and electric field due to an electric dipole at an observation point distant r from the midpoint of the electric dipole.

[2]

  1. What is an electron gun?
  2. Explain the difference between magnetic force and electric force.
  3. State and explain Kirchhoff's law of electrical network.

[3]

  1. Write the equation for conservation of charge in a medium.
  2. Obtain the wave equations for electromagnetic fields in a homogeneous isotropic conducting medium.
  3. Deduce expressions for electric and magnetic fields of an oscillating electric dipole.

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