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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.
 2.5T.
 0.5T.
 10T.

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Electromagnetic Field Theory
Magnetic current is composed of which of the following?

 Both conduction and displacement current.
None of these
 Only conduction current.
 Only displacement current.

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Electromagnetic Field Theory
In above question no. 9, the average force on the core to reduce the air gap will be

 1666.22 N.
 3332.47 N.
 832.29 N.
 6664.8 N.

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Electromagnetic Field Theory
Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is

 zero.
 dependent on coordinates of field points.
 same as that produced by one plate.
 double the field produced by one plate.

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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 Null vector.
 E.
 | E |.
 Zero.

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

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