PHYS208 Fundamentals of Physics II

Hint for Ch. 30, 49P

The field outside the circular pipe will behave as if its current is concentrated on its axis.

Recognize that the unknown current in the wire must point in the same direction as the current in the pipt to satisfy the stated critera.


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Last updated Oct. 29, 1997.
Copyright George Watson, Univ. of Delaware, 1997.