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Electromagnetic Field Theory

Electromagnetic Field Theory
Unit of electric flux density is

 coulomb / meter2.
 farad / meter.
 coulomb.
 weber / meter2.

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Electromagnetic Field Theory
An electric field of 1.92 × 103 N/C is maintained across two plates separated by 0.015 m. Potential difference across plates will be

 14.40 V.
 1.4 V.
 28.8 V.
 2.88 V.

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Electromagnetic Field Theory
XEROX machine is working on

 heating effect of current.
 peltier effect.
 electrostatic effect.
 magnetic effect.

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Electromagnetic Field Theory
In case of all flux from the current in coil 1 links with coil 2, the coefficient of coupling will be

 0.5.
 1.0.
 2.0.
 Zero.

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Electromagnetic Field Theory
Two coupled coils with L1 = L2 = 0.6 H have a coupling coefficient of K = 0.8. The turns ratio N1/N2 is

 4.
 1.
 2.
 0.5.

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Electromagnetic Field Theory
MUF is highest in periods of greatest sunspot activity.

True
False

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