Tricky Electromagnetic Theory MCQ

Test your knowledge with important Tricky Electromagnetic Theory MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Tricky Electromagnetic Theory MCQs at Bissoy

• A loop is rotating about the y axis in a magnetic field B = Bocos(wt + α)at. The voltage in the loop is
  ক

  Zero

  খ

  Due to rotation only

  গ

  Due to transformer action only

  ঘ

  Due to both rotation and transformer action
• The intrinsic impedance of copper at high frequencies is
  ক

  Purely resistive

  খ

  Purely inductive

  গ

  Complex with a capacitive component

  ঘ

  Complex with a inductive component
• Identify which one of the following will NOT satisfy the wave equation.
  ক

  50ej(wt – 3z)

  খ

  sin(w(10z + 5t))

  গ

  cos(y2 + 5t)

  ঘ

  sin x cos t
• The electric field of a uniform plane electromagnetic wve in free space, along the positive direction, is given by E = 10(ay + jaz)e-j25x. The frequency and polarization of the wave, respectively are
  ক

  1.2 GHz, left circular

  খ

  4 GHz, left circular

  গ

  1.2 GHz, right circular

  ঘ

  4 GHz, right circular
• The electric field strength at a far-off point P due to a point charge, +q located at the origin O is 100 milliVolt/meter. The point charge is now enclosed by a perfectly conducting hollow metal sphere with its centre and the origin O. The electric field strength at the point, P is
  ক

  Remains unchanged in its magnitude and direction

  খ

  Remains unchanged in its magnitude but reverse in direction

  গ

  Would be that due to a dipole formed by the charge, +q, at O and -q induced

  ঘ

  Would be zero
• An electric field on a plane is described by its potential V = 20(r-1 + r-2), where r is the distance from the source. The field is due to
  ক

  A monopole

  খ

  A dipole

  গ

  Both a monopole and a dipole

  ঘ

  A quadruple
• For the wave equation E = 10sin (wt-5z)ax, the wave propagation will be in the direction of
  ক

  Y direction

  খ

  Z direction

  গ

  X direction

  ঘ

  XY direction
• Magnetic vector potential is a vector
  ক

  Whose curl is equal to the magnetic flux density

  খ

  Whose curl is equal to the electric field intensity

  গ

  Whose divergence is equal to electric potential

  ঘ

  Which is equal to the vector product E x H
• The depth of penetration of a wave in a lossy dielectric increases with increasing
  ক

  Conductivity

  খ

  Permeability

  গ

  Wavelength

  ঘ

  Permittivity
• The tangential component of an electric field will be continuous in which boundary?
  ক

  Conductor-Conductor

  খ

  Conductor-Dielectric

  গ

  Dielectric-Dielectric

  ঘ

  Any boundary