Concept explainers
a. Derive an expression for the magnetic field strength at distance d from the center of a straight wire of finite length l that carries current l.
b. Determine the field strength at the center of a current carrying square loop having sides of length
c. Compare your answer to part b to the field at the center of a circular loop of diameter
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PHYS SCI&ENGNRS V2&S/WRKBK&MOD MSTG/ET
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