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Electromagnetic Field Theory

Electromagnetic Field Theory
What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m

 4 mm.
 2.4 mm.
 8.4 mm.
 10 mm.

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Electromagnetic Field Theory
Conductor is constant and field is varying then emf will be induced. This principle is called

None of these
 dynamically induced emf.
 virtually induced emf.
 static induced emf.

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Electromagnetic Field Theory
In frec space E (z,t) = 103 sin(ωt - βz) uy v/m. What is the value of H (z,t)

 (103/377) sin(ωt - β z)(-uy) A/m.
  (103/377) sin(ωt - β z)(-ux) A/m.
 None of above.
 (103/377) cos(ωt - β z)(-ux) A/m.

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Electromagnetic Field Theory
Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will

 not be equilibrium.
 will move out of the field of influence of two charges.
 remain in stable equilibrium.
 be in unstable equilibrium.

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Electromagnetic Field Theory
A potential field is given by V = 3x2 y – yz. The electric field at P(2, -1, 4) is

 12 Ix - 8 Iy - Iz V/m.
 12 Ix - Iz V/m.
 12 Ix - 8 Iy V/m.
 12 Ix + 8 Iy + Iz V/m.

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Electromagnetic Field Theory
Which of the following represents ohms law

 J = σE
All of these
 I = GV
 V = RI

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MORE MCQ ON Electromagnetic Field Theory

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