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A very long flat conducting strip of width d and negligible thickness lies in a horizontal plane and carries a uniform current I across its cross section.
a) Discover the field at points a distance directly above its center, assuming the strip is infinitely long. [Hint: Divide the strip into many thin "wires," and sum (integrate) over these.]
Express in terms I, d, y and appropriate constants.
b) What Value does B approach for y>>d?
c) Does this make sense? Describe.
two cylindrical wires of identical length are madeof copper and aliminum. if they carry the same current and have the
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