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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

 12t3.
 4t3.
 24t.
 12t.

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Electromagnetic Field Theory
Which of following is not a unit of flux?

 Maxwell.
 Telsa.
 Weber.
 All of above.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Newtons law of motion.
 Law of conservation of energy.
 Gauss theorem.
 Newtons law of gravitation.

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Electromagnetic Field Theory
An insulated metal sphere of 20 cm diameter is charged by rubbing with charges 2 × 10-8 C. Potential developed will be

 200 V.
 1800 V.
 0 V.
 900 V.

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Electromagnetic Field Theory
The field at any point on the axis of a current carrying coil will be

 parallel to axis.
 perpendicular to the axis.
 at angle of 45° with the axis.
 zero.

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Electromagnetic Field Theory
Mutual inductance between two magnetically coupled coils depends on

 permeability of core.
 cross sectional area of their common core.
 the number of their turns.
 all of above.

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MORE MCQ ON Electromagnetic Field Theory

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