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Electromagnetic Field Theory

Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

 4t3.
 24t.
 12t3.
 12t.

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Electromagnetic Field Theory
A sphere of 20 cm radius contains electrical charge of density 2/(r sinθ) c/m3. What is the total charge contained within the sphere?

 None of above.
 0.335 C.
 0.335/sinθ c.
 0.

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Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 most of the volume of an atom is empty space.
 unique nature of atom.
 the atoms can neither be created nor be destroyed.
 none of these.

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Electromagnetic Field Theory
A conductor of length 1 metre moves at right angles to magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced emf in the conductor will be

 25 V.
 50 V.
 100 V.
 75 V.

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Electromagnetic Field Theory
Unit of electric flux density is

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

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Electromagnetic Field Theory
A fan blade of length 2R rotates in a time period T in a magnetic field B. The induced voltage in the blade is proportional to

 2RBT.
 RBT.
 R2BT.
 R2B / T.

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MORE MCQ ON Electromagnetic Field Theory

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