A toroidal solenoid with 500 turns is wound on a ring with a mean radius of 2.90

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A toroidal solenoid with 500 turns is wound on a ring with a mean radius of 2.90 cm. Find the current in the winding that is required to set up a magnetic field of 0.350 T in the ring
(a) If the ring is made of annealed iron (Km = 14(0) and
(b) If the ring is made of silicon steel (Km = 52(0).
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College Physics

ISBN: 978-0321601834

7th edition

Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou

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