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Electromagnetic Field Theory

Electromagnetic Field Theory
In above question no. 9, the average force on the core to reduce the air gap will be

 6664.8 N.
 832.29 N.
 3332.47 N.
 1666.22 N.

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Electromagnetic Field Theory
The force experienced by a current carrying conductor lying parallel to a magnetic field is

 Bil sinθ.
 BIL.
 zero.
 Bil cosθ.

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Electromagnetic Field Theory
Electric field strength of charge

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

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Electromagnetic Field Theory
The ability of charged bodies to exert force on one another is attributed to the existence of

 neutrons.
 electrons.
 electric field.
 protons.

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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

 4.
 2.
 3.
 8.

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Electromagnetic Field Theory
The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a

Circle
None of these
Null
Figure of eight

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