An iron-cored choke with 1 mm air-gap length, draws 1 A

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An iron-cored choke with 1 mm air-gap length, draws 1 A when fed from a constant voltage ac source of 220 V. If the length of air-gap is increased to 2 mm, the current drawn by the choke would

1. become nearly one half
2. remain nearly the same
3. become nearly double
4. become nearly zero

Correct Option: C

NA