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.

 2.28 A.
 4.56 A.
 9.04 A.
 18.08 A.

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Electromagnetic Field Theory
Which of following is true for a purely inductive circuit ?

 Apparent power of the circuit is zero.
 Any capacitance even if present in the circuit will not be charged.
 Actual power of the circuit is zero.
 Reactive power of the circuit is zero.

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