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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is

 none of these.
 10π coulombs.
 80π coulombs.
 40π coulombs.

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Electromagnetic Field Theory
Self inductance of magnetic coil is proportional to

 N.
 N2.
 1 / N.
 1 / N2.

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Electromagnetic Field Theory
For an inductor, current is proportional to

 none of them.
 magnetic field.
 both (A) and (B).
 voltage across the inductor.

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Electromagnetic Field Theory
A sphere of 20 cm radius contains electrical charge of density 2/(r sinθ) c/m3. What is the total charge contained within the sphere?

 0.
 0.335/sinθ c.
 0.335 C.
 None of above.

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Electromagnetic Field Theory
________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field.

 Magnetic flux density.
None of these
 Electric intensity.
 Electric flux.

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