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# 1.(7 pts. total) The figure shows a cut-away side view of a circular current loop. The...

###### Question:

1.(7 pts. total) The figure shows a cut-away side view of a circular current loop. The current is flowing out of the page on the left-hand side of the loop and into the page on the right-hand side. 1 3 4 COMED --- (a) (2 pts.) Sketch about five of the magnetic field lines produced by the current loop. Make sure to indicate which direction the magnetic field is pointing, and how the lines bend as they pass through the loop and out into space. (1 pt. for direction, 1 for curvature.) (b) (2 pts.) Based on the shape of the magnetic field lines, is the magnetic field stronger (greater in magnitude) at point 1 or point 2? What aspect of the magnetic field lines tells you that? (1 pt. answer, 1 pt. reasoning) (c) (3 pts.) Is the magnetic field stronger at point 3 or point 4? Use Ampere's Law to explain how you can tell that from the shape of the magnetic field lines. Make sure to sketch on the drawing the closed curve to which you are applying Ampere's Law.

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