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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the

 phase velocity.
 normal velocity.
 velocity of propagation.
 group velocity.

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Electromagnetic Field Theory
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as

 A = sinφ Ir.
 A = cosφ Ir - sinφ Ir.
 A = cosφ Ir + sinφ Iφ.
 A = cosφ Ir.

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Electromagnetic Field Theory
The coils having self inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect then in series opposing?

 0 mH.
  10 mH.
 5 mH.
 20 mH.

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

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

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Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?

 maximum
 0
None of these
 either 1 or 2

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