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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 repulsive.
 zero.
 none of above.
 attractive.

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Electromagnetic Field Theory
Electric field strength of charge

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

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Electromagnetic Field Theory
A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is

 2 N.
 2.5 N.
 3.75 N.
 5 N.

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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Geostationary satellite
Orbiting satellite
Active satellite
Passive satellite

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Electromagnetic Field Theory
For DC voltage an inductor is virtually a

 depends on magnitude of voltage.
 depends on polarity.
 open circuit.
 short circuit.

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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.
 ρv/3 C/m2.
 aρv/3 C/m2.
 aρv C/m2.

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MORE MCQ ON Electromagnetic Field Theory

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