In a lab at UTD, a straight vertical long wire carries a current of 6.18 A downward (pointing towards the floor).
A uniform 0.488 T magnetic field is applied from the south to the north through the wire. What is the magnetic
force on a 1.27 m section of the wire (in N; use positive sign if the force points eastward and negative sign if
the force points westward)?
QUESTION 16
A magnetic field is used to suspend a wire of mass 3.50E-2 kg and length 0.171 m. The wire is carrying a
current of 2.34 A. What minimum magnetic-field magnitude is needed to balance the pull of gravity (in T)?
QUESTION 17
A long straight wire placed on the y axis carries a current of 2.41 A in the +y direction. The coordinate system
is shown in the figure. What is the magnetic field generated by the current at the point (x, y, z) = (2.50 m, 1.50
m, 0 m)? (in T; use positive sign if the magnetic field points in the +z direction and negative sign if it points in
the -z direction)
+y
+zO
+x