Electromagnetic Field Theory
An inductor designed with 400 turns coil wound on an iron core of 16 cm2 cross sectional area and with a cut of air gap length of 1 mm. The coil is connected to a 230 V, 50 Hz supply. Neglected coil resistance, core loss, iron reluctance and leakage inductance. Find the current in the inductor.

 9.04 A.
 18.08 A.
 2.28 A.
 4.56 A.

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Electromagnetic Field Theory
The effective reactance of an inductive coil

 none of these.
 decreases because of stray capacitance as the frequency increases.
 increases because of stray capacitance as the frequency increases.
 remains same irrespective of the frequency.

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