Electromagnetic Field Theory
A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by

 ab Bo cosω t.
 Zero.
  abω Bo sinω t.
 Bo ω sinω t.

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

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

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Electromagnetic Field Theory
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at

 the ground surface.
 upper surface of the conductor.
 lower surface of the conductor.
 midway between the conductor and ground.

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