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Electromagnetic Field Theory

Electromagnetic Field Theory
An infinite non conducting sheet of charge has σ of 10-7 c/m3. Equipotential surface for a potential of 10 volts is.

 0.88 mm.
 1.32 mm.
 0.
  1.77 mm.

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Electromagnetic Field Theory
Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is

 dependent on coordinates of field points.
 same as that produced by one plate.
 double the field produced by one plate.
 zero.

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Electromagnetic Field Theory
A sphere of 20 cm radius contains electrical charge of density 2/(r sinθ) c/m3. What is the total charge contained within the sphere?

 0.335 C.
 0.335/sinθ c.
 None of above.
 0.

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Electromagnetic Field Theory
Which of the following is zero in relation to electromagnetic fields?

 Div grad V.
 Curl curl A.
 Div curl A.
 Grad div A.

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

VHF
VLF
HF
UHF

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Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 most of the volume of an atom is empty space.
 none of these.
 unique nature of atom.
 the atoms can neither be created nor be destroyed.

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