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Magnetic Field in a Semi-Infinite Wire
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[QUOTE="TSny, post: 5467296, member: 229090"] The problem is not clear concerning the location of the points where you are to find B. For a fixed value of r, the field will vary as you move parallel to the axis of the cylinder. I guess you are to assume that you are looking for B only at points in a plane that is perpendicular to the axis and located at the end of the cylinder. Likewise, the formula you gave for a semi-infinite wire is only valid for points in a plane oriented perpendicular to the wire and located at the end of the wire. To work this problem you need to understand how to obtain the formula you gave for the semi-infinite wire. The same reasoning can be used to help solve the cylinder problem. [/QUOTE]
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Magnetic Field in a Semi-Infinite Wire
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