Problem 9: A very large sheet of very long wires lie parallel to the y-z plane with the current coming out of the page. Only a very small portion of the wires are shown. There are 500 wires each carrying current I spread over a distance of 200D in the z direction. Two frames located with their left edge a distance 2D from the sheet. The dimensions of the frames are 3D × D. The top frame lies parallel to the x-z plane and the bottom is parallel to the x-y plane. Part (a) What is the magnitude of the magnetic flux through the top frame? +z (out) +x

Problem 9: A very large sheet of very long wires lie parallel to the y-z plane with the current coming out of the page. Only a very small portion of the wires are shown. There are 500 wires each carrying current I spread over a distance of 200D in the z direction. Two frames located with their left edge a distance 2D from the sheet. The dimensions of the frames are 3D × D. The top frame lies parallel to the x-z plane and the bottom is parallel to the x-y plane. Part (a) What is the magnitude of the magnetic flux through the top frame? +z (out) +x