Author Question: Two long parallel wires lie in the xz plane. One wire passes through the point (2 m, 0, 0) and the ... (Read 75 times)

ereecah · **on:** Jul 28, 2018

Two long parallel wires lie in the xz plane. One wire passes through the point (2 m, 0, 0) and the other through the point (+2 m, 0, 0). The wires carry equal currents in the positive z direction. 1 . The magnetic field at (3 m, 0, 0) is in the negative y direction. 2 . The magnetic field at (1 m, 0, 0) is in the positive y direction. 3 . The magnetic field at (+1 m, 0, 0) is in the positive y direction. 4 . The magnetic field at (+3 m, 0, 0) is in the negative y direction.
a. 1 and 2 are correct.
b. 1 and 4 are correct.
c. 2 and 3 are correct.
d. 3 and 4 are correct.
e. None of the above are correct.

Question 2

The second most abundant gas in the atmosphere is
a. oxygen.
b. nitrogen.
c. water vapor.
d. carbon dioxide.