Question One: A long conducting wire with a square cross-section of side length a carries a uniform electric current density J. We are interested in the component of the magnetic field tangential (parallel) to the surface of the conductor. a. What direction does the magnetic field point (cw or ccw) and what is its approximate magnitude (i.e. what is its average magnitude)? b. What method (or law) would you use to find its exact magnitude everywhere over the surface? conductor a c. Is the normal component of the magnetic field exactly zero at the surface? Why or why not? d. If there also exists a total current I = Ja² flowing out of the page distributed uniformly over the surface of the conductor, is the magnetic field outside the conductor zero everywhere? Why or why not?
Question One: A long conducting wire with a square cross-section of side length a carries a uniform electric current density J. We are interested in the component of the magnetic field tangential (parallel) to the surface of the conductor. a. What direction does the magnetic field point (cw or ccw) and what is its approximate magnitude (i.e. what is its average magnitude)? b. What method (or law) would you use to find its exact magnitude everywhere over the surface? conductor a c. Is the normal component of the magnetic field exactly zero at the surface? Why or why not? d. If there also exists a total current I = Ja² flowing out of the page distributed uniformly over the surface of the conductor, is the magnetic field outside the conductor zero everywhere? Why or why not?
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give solution of c and d
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