A toroid with a circular cross section has a current I in its windings – InterviewSolution

1.	A toroid with a circular cross section has a current I in its windings. The total number of windings is N. The total current through an Amperian loop of radius r equal to the mean radius of the toroid is (A) zero(B) I (C) NI (D) \(\cfrac{NI}{2\pi r}\)
Answer» Correct option is (C) NI

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