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Electromagnetic Field Theory

Electromagnetic Field Theory
Find H for centre of solenoid having finite length d = 1 unit where N = no of turns = 500, I = 2 A.

 1000.
 None of these.
 100.
 500.

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

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

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Electromagnetic Field Theory
The lagging of flux density behind the applied magnetising force is known as

 permeance.
 hysteresis.
All of these
 flux.

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Electromagnetic Field Theory
When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .

Reflection
None of these
Transmission
Refraction

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Electromagnetic Field Theory
A conductor of length 1 metre moves at right angles to magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced emf in the conductor will be

 50 V.
 75 V.
 25 V.
 100 V.

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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.

 1.32 mm.
  1.77 mm.
 0.
 0.88 mm.

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