3. Force on wire segment Consider a very long straight wire that lies on the :r-axis. The wire carries current 11 in the +x-direction. The magnetic eld due to the long wire at any point in the :ryplane is A straight wire segment lies on the yaxis with its ends at y = a and y = b. The segment carries current I2 in the +3! direction. (3.} Find the net magnetic force on the wire segment due to the long wire using 1:" = I I2 dfx E. (b) Find the net magnetic torque on the wire segment about the origin using 1? = f I" x d