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Electromagnetic Field Theory

Electromagnetic Field Theory
The Biot-savarts law is a general modification of

 Faradays law.
 Amperes law.
 Lenzs law.
 Kirchhoffs law.

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Electromagnetic Field Theory
A loop antenna is a commonly used for

Direction finding
All of these
Satellite communication
Radar

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Electromagnetic Field Theory
The magnetic field required to reduce the residual magnetism to zero is called

 Saturation magnetism.
 Retentivity.
 Hysteresis.
 Coercivity.

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Electromagnetic Field Theory
For DC voltage an inductor is virtually a

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

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Gauss theorem.
 Law of conservation of energy.
 Newtons law of gravitation.
 Newtons law of motion.

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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

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

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