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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

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

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Electromagnetic Field Theory
Electric flux in coulombs emanating from any surface of a cube containing C coulombs of charge at its centre is

 Q / 6ε.
 Q / 4π.
 Q / 6.
 4πQ / 6ε.

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Electromagnetic Field Theory
Magnetic circuit with cross sectional area of 20 cm2 is to be operated at 50 Hz from 120 Vrms supply. The number of turns required to active a peak magnetic flux density of 1.8 T in the core flux is

 450.
 600.
 150.
 300.

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Electromagnetic Field Theory
In above problem, if the inductance L1 and L2 in series aiding with 30 mH mutual inductance, then total inductance will be

 150 mH.
 50 mH.
 200 mH.
 100 mH.

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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 Null vector.
 | E |.
 E.
 Zero.

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Electromagnetic Field Theory
Biot-Savarts law states the relation between magnetic intensity and

 filament current only.
 (A), (B), and (D) are all correct.
 surface current only.
 volume current only.

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MORE MCQ ON Electromagnetic Field Theory

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