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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

3 to 30 kHz
300 to 3000 kHz
3000 to 30000 MHz
30000 to 300000 MHz

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be

 3.768 μH.
 37.68 μH.
 1.1304 μH.
  113.04 μH.

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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

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

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Electromagnetic Field Theory
A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere

 QR/(4π εo r3).
 Qr/(4 π εo R3).
 3 Qr/(4 π εo R3).
 Q/(4 π εo r3).

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Electromagnetic Field Theory
Electric field strength of charge

 Decrease with distance.
 Increase square distance.
 Decrease with square distance.
 Increase distance.

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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 10 mH.
 20 mH.
 5 mH.
 15 mH.

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MORE MCQ ON Electromagnetic Field Theory

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