Electromagnetic Field Theory
Plane z = 10 m carries charge 20 C/m2. The electric field intensity at the origin is

 – 10 uz v/m.
 – 72 πuz v/m.
  – 360 πuz v/m.
 – 18 πuz v/m.

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Electromagnetic Field Theory
According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is

 directly proportional to the square of the distance between them.
 inversely proportional to the square of the distance between them.
 inversely proportional to the distance between them.
 directly proportional to the distance between them.

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Electromagnetic Field Theory
A wire carrying current is bent in the form of a circular loop. Then the magnetic field around each portion of the wire will be

 perpendicular to the circumference of the wire.
 none of above.
 parallel to the plane of the wire.
 parallel to half portion and perpendicular for the other half.

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