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Electromagnetic Field Theory

Electromagnetic Field Theory
The divergence of a vector is a scalar, while the curl of a vector is another

None of these
Scalar
Vector
Unit vector

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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.
 0.5T.
 2.5T.
 10T.

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Electromagnetic Field Theory
A conductor of length L has current I passing through it, when it is placed parallel to strong magnetic field. The force experienced by the conductor will be

 BIL.
 BI2L.
 zero.
 BL2I.

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Electromagnetic Field Theory
The virtual height of an ionospheric layer is __________ true height

Higher than
Less than
Equal to
No relation

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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying

 106 volts/sec.
 106 Amp.
 106 Amp/sec.
 106 volts.

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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Orbiting satellite
Passive satellite
Geostationary satellite
Active satellite

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