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Electromagnetic Field Theory
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exits between the conductor and the ground. The maximum electric stress occur at
Midway between the conductor and ground.
The lower surface of the conductor.
The ground surface.
The upper surface of the conductor.
Midway between the conductor and ground.
The lower surface of the conductor.
The ground surface.
The upper surface of the conductor.
Answer
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Related Question
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
group velocity.
normal velocity.
velocity of propagation.
phase velocity.
group velocity.
normal velocity.
velocity of propagation.
phase velocity.
Answer
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Electromagnetic Field Theory
Magnetostriction is a phenomenon of
generation of electricity in ferromagnetic materials.
generation of magnetism in electrical conductors.
change in physical dimensions of ferromagnetic materials during magnetism.
change in permeability of ferromagnetic materials during magnetism.
generation of electricity in ferromagnetic materials.
generation of magnetism in electrical conductors.
change in physical dimensions of ferromagnetic materials during magnetism.
change in permeability of ferromagnetic materials during magnetism.
Answer
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Electromagnetic Field Theory
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m?
1.29 m.
1.39 m.
1.59 m.
1.19 m.
1.29 m.
1.39 m.
1.59 m.
1.19 m.
Answer
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Electromagnetic Field Theory
The Kirchhoff’s current law is implict in expression
Divergence of B = 0.
Surface integral of (j.ds) = 0.
Curl of H = J + (δ D)/(δ t).
Divergence of D = ρv.
Divergence of B = 0.
Surface integral of (j.ds) = 0.
Curl of H = J + (δ D)/(δ t).
Divergence of D = ρv.
Answer
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Electromagnetic Field Theory
If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then
n = K.
n = - k.
n. k = 0.
n × k = 0.
n = K.
n = - k.
n. k = 0.
n × k = 0.
Answer
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