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Electromagnetic Field Theory

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

 | E |.
 Zero.
 E.
 Null vector.

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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

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

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Electromagnetic Field Theory
An infinite sheet has a charge density of 150 μ C/m. The flux density in μ C/m 2 is

 100.
 50.
 1/75.
 75.

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Electromagnetic Field Theory
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m

  1144 μN.
 244 μN.
 144 μN.
 1440 μN.

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Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 Zero.
 Infinity.
  2.16.
 4.32.

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Electromagnetic Field Theory
The core of coil length is 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be

 48 mH.
 12 mH.
 3 mH.
 24 mH.

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MORE MCQ ON Electromagnetic Field Theory

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