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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

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

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Electromagnetic Field Theory
In case of surface waves the field strength at a point is directly proportional to

Current of the antenna
Wave frequency
Antenna height
Distance of the point from the antenna

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Electromagnetic Field Theory
The principle of dynamically induced emf is utilized in a

 choke.
 thermocouple.
 transformer.
 generator.

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Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

 V / D
 V² / D
 V × D²
 V × D

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Electromagnetic Field Theory
A conductor of length 1 metre moves at right angles to magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced emf in the conductor will be

 75 V.
 100 V.
 50 V.
 25 V.

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Electromagnetic Field Theory
________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field.

 Electric intensity.
 Electric flux.
None of these
 Magnetic flux density.

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MORE MCQ ON Electromagnetic Field Theory

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