1) A copper wire is placed to be parallel to the x-axis. The magnetic field is in the y-axis. When this copper wire is moving in the z-direction, in which direction the conducting electrons in the copper wire will move? Explain.
2) Two long parallel straight wires carry equal currents in opposite directions. At a point midway between the wires, the magnetic field they produce is:
A. Zero
B. Non-zero and along a line connecting the wires
C. None-zero and parallel to the wires
D. None-zero and perpendicular to the plane of the two wires
E. None of the above
Please explain your answer.