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Electromagnetic Field Theory

Electromagnetic Field Theory
Self inductance of magnetic coil is proportional to

 N.
 1 / N.
 1 / N2.
 N2.

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Electromagnetic Field Theory
A Yagi antenna has a driven antenna

Only
With a reflector and one or more directors
With a reflector
With one or more directors

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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.
 0.
  1.77 mm.
 1.32 mm.

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Electromagnetic Field Theory
A plane wave in a homogeneous medium has E = 50 sin(108t + 2z) uy V/m. What is the direction of wave propagation

 – z direction.
 y direction.
 z direction.
 – y direction.

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Electromagnetic Field Theory
An emf of 16 volts is induced in a coil of inductance 4 H. The rate of change of current must be

 32 A / s.
 4 A / s.
 16 A / s.
 64 A / s.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Newtons law of motion.
 Newtons law of gravitation.
 Gauss theorem.
 Law of conservation of energy.

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MORE MCQ ON Electromagnetic Field Theory

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