## PHYS208 Fundamentals of Physics II

### Hint for Ch. 31, 68P

a) Approximate the number of turns by dividing the circumference of the inner diameter
by the diameter of the wire, which is 628. Use formula 31-37 for the inductance of a toroid.

"http://www.physics.udel.edu/~watson/phys208/exercises/hints/31-68P.html"

Last updated Nov. 6, 1997.

Copyright George Watson, Univ. of Delaware, 1997.