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Electromagnetic Field Theory

Electromagnetic Field Theory
The electric flux is given D = (2y2 + z) Ix + 4xy Iy + x Iz C/m2. The volume charge density at point (-1, 0, 3) is

 0 C/m3.
 - 2 C/m3.
 - 4 C/m3.
 - 8 C/m3.

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Electromagnetic Field Theory
A plane wave magnetic field is represented by Bx = cos(y – ct). The electric and magnetic fields will be zero in the direction

 Ex = Ey = 0, By = Bz = 0.
 Ey = Ez = 0, By = Bz = 0.
 None of these.
 Ex = Ey = 0, Bx = By = 0.

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Electromagnetic Field Theory
A loop antenna is a commonly used for

Direction finding
Satellite communication
Radar
All of these

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Electromagnetic Field Theory
A sphere of radius with a uniform charge density ρv C/m3 shall have electric flux density at radius “r = a” equal to

 aρv/4 C/m2.
 aρv C/m2.
 ρv/3 C/m2.
 aρv/3 C/m2.

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Electromagnetic Field Theory
The coils having self inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect then in series opposing?

 5 mH.
 0 mH.
  10 mH.
 20 mH.

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Electromagnetic Field Theory
A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur?

 At right angles to the axis of the magnetic field.
 Along the axis of the magnetic field.
 Anywhere.
 At an angle of 45° to the axis of the magnetic field.

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MORE MCQ ON Electromagnetic Field Theory

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