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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

300 to 3000 kHz
30000 to 300000 MHz
3 to 30 kHz
3000 to 30000 MHz

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Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of magnetic field.
 direction of current.
 direction of electric field.
 direction of emf.

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Electromagnetic Field Theory
Mutual inductance between two magnetically coupled coils depends on

 cross sectional area of their common core.
 all of above.
 the number of their turns.
 permeability of core.

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Electromagnetic Field Theory
Electric field intensity (E) at ant point in an electric field is equal to

 potential gradient.
 (potential gradient)1/2.
 (potential gradient)1/3.
 (potential gradient)2.

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Electromagnetic Field Theory
The potential that appears at a point in space due to the current which caused it is called potential

Oscillating
Retardation
Accelerating
Lagging the current

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Electromagnetic Field Theory
The electric flux is given D = (2y2 + z) Ix + 4xy Iy + x Iz C/m2. The volume charge density at point (-1, 0, 3) is

 - 8 C/m3.
 0 C/m3.
 - 4 C/m3.
 - 2 C/m3.

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MORE MCQ ON Electromagnetic Field Theory

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