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Electromagnetic Field Theory

Electromagnetic Field Theory
A loop antenna is a commonly used for

All of these
Direction finding
Satellite communication
Radar

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Electromagnetic Field Theory
A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is

 2 N.
 2.5 N.
 3.75 N.
 5 N.

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Electromagnetic Field Theory
An electric field on a place described by its potential V = 20 (r -1 + r-2) where r is the distance from the source. The field is due to

 Both of A and B.
 A monopole.
 A quardra pole.
 A dipole.

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Electromagnetic Field Theory
The right hand rule for determining the direction of the induced EMF was introduced by

 Maxwell
 Lenz
 Fleming
 Faraday

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Electromagnetic Field Theory
Which of the following represents ohms law

 V = RI
 I = GV
All of these
 J = σE

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Electromagnetic Field Theory
A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position

 5 × 10-5 uy N.
 5 × 10-5 ux N.
  - 5 × 10-5 uy N.
 5 × 10-5 uz N.

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