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Electromagnetic Field Theory

Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as

 R = ρ × ( l / A).
 J = σE.
 V = IR.
 J = E / σ.

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Electromagnetic Field Theory
A dipole having a moment p – 3ux - 5uy + 10uz ncm is located at p(1,2,-4) in free space. The V as Q(2,3,4) is

 1.31 V.
 1.26 V.
 2.62 V.
 2.52 V.

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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
Biot-Savarts law states the relation between magnetic intensity and

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

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Electromagnetic Field Theory
Radiation intensity in a given direction is the

None of these
Energy radiated per square metre
Power radiated per square metre
Power radiated per unit solid angle in that direction

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Electromagnetic Field Theory
The power gain of a half-wave dipole with respect to an isotropic radiator is

4.15 db
3 db
6 db
2.15 db

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MORE MCQ ON Electromagnetic Field Theory

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