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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 zero.
 none of above.
 repulsive.
 attractive.

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Electromagnetic Field Theory
In an inductor current cannot change abruptly. Comment on the statement.

 Cannot comment.
 False.
 True partially.
 True.

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Electromagnetic Field Theory
In free 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)(ux) A/m.
 None of above.
 (103/377) sin(ωt - β z)(-ux) A/m.
 (103/377) cos(ωt - β z)(-ux) A/m.

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Electromagnetic Field Theory
What is the value of total electric flux coming out of a closed surface?

 Zero.
 Equal to the surface charge density.
 Equal to volume change density.
 Equal to total charge enclosed by the surface.

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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
A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position

 5 × 10-5 ux N.
 5 × 10-5 uy N.
 5 × 10-5 uz N.
  - 5 × 10-5 uy N.

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MORE MCQ ON Electromagnetic Field Theory

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