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Electromagnetic Field Theory

Electromagnetic Field Theory
The right hand rule for determining the direction of the induced EMF was introduced by

 Lenz
 Fleming
 Maxwell
 Faraday

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Electromagnetic Field Theory
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m?

 1.29 m.
 1.59 m.
 1.39 m.
 1.19 m.

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Electromagnetic Field Theory
Magnetic flux density emerging out of a closed surface is

 infinite.
 depends on magnetic movements outside the closed surface
 depends on magnetic movements inside the closed surface.
 zero.

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

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Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is

Low directional coupling
Poor directivity
Narrow bandwidth
High standing wave ratio

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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 5 mH.
 15 mH.
 10 mH.
 20 mH.

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MORE MCQ ON Electromagnetic Field Theory

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