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Electromagnetic Field Theory

Electromagnetic Field Theory
Find the strength of the magnetic field when a 2m long conductor is moving with a velocity 4m/s inducing an emf of 20V.

 5T.
 0.5T.
 2.5T.
 10T.

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Electromagnetic Field Theory
Parabolic and lens antenna used at

Low frequency
Microwave frequency
Medium frequency
High frequency

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Electromagnetic Field Theory
The tubes of force within the magnetic material are known as

 lines of force.
 tubes of indication.
 none of them.
 magnetic flux.

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Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

 V × D
 V² / D
 V × D²
 V / D

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Electromagnetic Field Theory
A potential field is given by V = 3x2 y – yz. The electric field at P(2, -1, 4) is

 12 Ix + 8 Iy + Iz V/m.
 12 Ix - 8 Iy - Iz V/m.
 12 Ix - 8 Iy V/m.
 12 Ix - Iz V/m.

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Electromagnetic Field Theory
The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then

 turns ratio of the transformer is also two.
 transformer is an ideal transformer.
 it is a perfect transformer.
 none of these.

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