Electromagnetic-theory Questions Set 55:
The unit of electric flux density is
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If all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be:
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If a wire of resistivity ρ is stretched to double its length, then its new resistivity will:
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How is the directivity of an isotropic antenna related to the beam area?
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Attenuation constant and Phase constant of EM waves are 5.6 Np/m and 12.54 rad/m Find out phase difference between Electric field and magnetic field ?
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Which one of the following is not necessarily an advantage of D.C. motors over A.C. motors?
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The intensity of the magnetic field at a distance of 10 cm from a long straight wire carrying a current of 20 amperes is:
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What does zero permeability or permittivity imply?
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Inside a hollow conducting sphere,
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The electric charges are distributed in a small volume. The electric flux through a spherical surface of radius 10 cm surrounding the total charge is 20 V⋅m. The electric flux through a concentric sphere of radius 20 cm will be:
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