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Electromagnetic Field Theory

Electromagnetic Field Theory
Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be

 5.
 10.
 20.
 50.

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Electromagnetic Field Theory
Plane z = 10 m carries charge 20 C/m2. The electric field intensity at the origin is

 – 18 πuz v/m.
  – 360 πuz v/m.
 – 72 πuz v/m.
 – 10 uz v/m.

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Electromagnetic Field Theory
The shape of B-H curve for air gap is

 ellipse.
 hyperbola.
 parabola.
 straight line.

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Electromagnetic Field Theory
The divergence of a vector is a scalar, while the curl of a vector is another

None of these
Scalar
Unit vector
Vector

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Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 none of tha above.
 zero.
 infinite.
 finite.

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Electromagnetic Field Theory
If the static magnetic flux density is B, then

  Divergence of B = 0.
 Divergence of B = J.
 Curl of B = 0.
 Curl of B = J.

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