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. \(\frac{N I}{2 \pi r}\)
Answer:C
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. \(\frac{N I}{2 \pi r}\)