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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.

 1.32 mm.
 0.
  1.77 mm.
 0.88 mm.

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Electromagnetic Field Theory
________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field.

 Electric intensity.
 Magnetic flux density.
 Electric flux.
None of these

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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 = 0.
 n = K.
 n = - k.
 n × k = 0.

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Electromagnetic Field Theory
A metal sphere with 1 m radius and a surface charge density of 10 coulombs/m2 is enclosed in a cube of 10 m side. The total outward electric displacement normal to the surface of the cube is

 40π C.
 5 C.
 None of above.
 10 C.

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Electromagnetic Field Theory
Parabolic and lens antenna used at

Medium frequency
Microwave frequency
High frequency
Low frequency

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Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of current.
 direction of electric field.
 direction of emf.
 direction of magnetic field.

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