A Long Wire Along the X Axis Is Carrying a Current

question 24

Multiple Choice

A long wire along the x axis is carrying a current increasing at a constant rate in the +x direction. A rectangular coil lies in the x-y plane in the 4th quadrant. In which direction is the induced magnetic field at the center of the rectangular coil?

• A) in the -z direction
• B) There is no direction; the induced current in the coil is zero since the x axis and the coil are in the same plane.
• C) in the +z direction
• D) No direction can be found since the orientation of the rectangular coil is not given.

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