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Question
A toroid of mean radius 24 cm and circular cross section of radius 2.5 cm is wound with a superconducting wire of length 1000 m that carries a current of 360 A.
(a) What is the number of turns on the coil?
(b) What is the magnetic field at the mean radius?
(c) Assuming that B is constant over the area of the coil, calculate the magnetic energy density um and the total energy Um stored in the toroid.
Attachment:- hw10.docx
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