A toroid of mean radius 24 cm and circular cross section of, Ask an Expert

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A toroid of mean radius 24 cm and circular cross section of radius 1.5 cm is wound with a superconducting wire of length 1000 m that carries a current of 350 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.

um =

Um =

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