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Science · Physics
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An air-filled cylindrical inductor has 2900 turns, and it is 2.5 cm in diameter and 27.0 cm long.

(a) What is its inductance?

(b) How many turns would you need to generate the same inductance if the core were iron-filled instead? Assume the magnetic permeability of iron is about 1200 times that of free space.
turns

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