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Electromagnetic Field Theory

Electromagnetic Field Theory
The magnetic intensity in A/m at the centre of circular coil of diameter 1m and carrying a current of 2A is

 8.
 2.
 3.
 4.

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Electromagnetic Field Theory
The energy stored in the magnetic field at a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying an current at 10 A, is

 1.15 J.
 0.15 J.
 0.5 J.
 0.015 J.

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

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

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be

  113.04 μH.
 3.768 μH.
 37.68 μH.
 1.1304 μH.

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Electromagnetic Field Theory
The coils having self inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect then in series opposing?

 20 mH.
  10 mH.
 5 mH.
 0 mH.

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Electromagnetic Field Theory
Electric field strength of charge

 Increase square distance.
 Increase distance.
 Decrease with distance.
 Decrease with square distance.

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MORE MCQ ON Electromagnetic Field Theory

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