Question

The plane surface at y=0 (the x-z plane) has a uniform surface current in the z (k) direction. Think of a thin sheet of water flowing in the z direction along some a surface at y=0. Answer the following T/F questions. Use ideas of symmetry and recall that the magnetic field at a point is perpendicular to the current causing it and perpendicular to the line from the current element causing the field to the point where it is evaluated. You might consider Ampere’s law applied to the dashed loop in the figure. y x

12) A There is a component of the magnetic field in the y direction (perpendicular to the surface containing the current). a) True b) False

13) The magnetic field in the region y>0 has a non-zero component in the +z direction. a) True b) False

14) The magnetic field in the region y>0 is opposite to the magnetic field in the region y<0. a) True b) False

15) A The magnetic field strength decreases with distance (in the y direction) from the sheet of current. a) True b) False

Answer 1

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