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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.
 repulsive.
 none of above.
 attractive.

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

 flux.
 permeance.
 hysteresis.
All of these

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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying

 106 volts/sec.
 106 Amp/sec.
 106 Amp.
 106 volts.

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Electromagnetic Field Theory
The tubes of force within the magnetic material are known as

 tubes of indication.
 lines of force.
 none of them.
 magnetic flux.

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Electromagnetic Field Theory
How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m?

 1.5 mA.
 2.5 mA.
 1mA.
 2 mA.

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

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MORE MCQ ON Electromagnetic Field Theory

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