# act06 - Do NOT write on these sheets or take them with you...

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Do NOT write on these sheets or take them with you! The next class needs them too! PHYS-1200 PHYSICS II SPRING 2005 Class 6 Activity: Ampere’s Law 1. The figure below represents a wire that is perpendicular to the page, and surrounded by a circular Amperian path of integration. The current in the wire is equal to 2.0 A, and is directed out of the page. a) Copy the figure onto your paper. At point P , draw an arrow in the direction of the magnetic field at that point. b) What is the magnitude of the angle between the magnetic field and the path of integration at point P ? c) What is the value of the integral s B d about the path shown in the picture? Express your answer in terms of μ 0 . 2. The figure below represents a wire that is perpendicular to the page, and surrounded by a square Amperian path of integration. The current in the wire is equal to 2.0 A, and is directed out of the page. a) Copy the figure onto your paper. At point P , draw an arrow in the direction of the magnetic field at that point.

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