(Ill) A wire is bent into the shape of a regular polygon
Chapter , Problem 43(choose chapter or problem)
(Ill) A wire is bent into the shape of a regular polygon withn sides whose vertices are a distance R from the center.(See Fig. 28-51, which shows the special case of n = 6.)If the wire carries a current 70 ,{a) determine the magnetic fieldat the center; (b) if n is allowedto become very large (n > oo),show that the formula in part (a)reduces to that for a circular loop(Example 28-12).
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