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Electromagnetic Field Theory

Electromagnetic Field Theory
If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then

 n = K.
 n × k = 0.
 n = - k.
 n. k = 0.

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Electromagnetic Field Theory
For a linear electromagnetic circuit, which of the following statement is true?

 Field energy is lesser than the co-energy.
 Field energy is greater than the co-energy.
 Field energy is equal to the co-energy.
 Co-energy is zero.

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Electromagnetic Field Theory
Electric field strength of charge

 Increase square distance.
 Decrease with distance.
 Increase distance.
 Decrease with square distance.

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Electromagnetic Field Theory
The force experienced by a current carrying conductor lying parallel to a magnetic field is

 Bil cosθ.
 BIL.
 zero.
 Bil sinθ.

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Electromagnetic Field Theory
When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon

None of these
The weight of the conductor
The direction of the conductor
The value of current

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Electromagnetic Field Theory
A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be

 37.5 V.
 150 V.
 50 V.
 75 V.

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MORE MCQ ON Electromagnetic Field Theory

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