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Electromagnetic Field Theory

Electromagnetic Field Theory
Find H for centre of solenoid having finite length d = 1 unit where N = no of turns = 500, I = 2 A.

 100.
 None of these.
 500.
 1000.

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Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 finite.
 none of tha above.
 infinite.
 zero.

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Electromagnetic Field Theory
The electric flux is given D = (2y2 + z) Ix + 4xy Iy + x Iz C/m2. The volume charge density at point (-1, 0, 3) is

 0 C/m3.
 - 8 C/m3.
 - 4 C/m3.
 - 2 C/m3.

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Electromagnetic Field Theory
The energy stored in the magnetic field at a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying an current at 10 A, is

 1.15 J.
 0.15 J.
 0.015 J.
 0.5 J.

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Electromagnetic Field Theory
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of

 length of conductor.
 flux density.
 current flowing through the conductor.
 cross-sectional area of conductor.

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Electromagnetic Field Theory
In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to

An increase in the value of reactance
No change in the reactance value
No change in the impedance value
Decrease in the value of reactance

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