6) Another wire is now added, also aligned with the z-axis at (x,y) = (0, -22.5 cm) as shown. This wire carries current I4 A. Which of the following statements is true? a. If I4 is directed along the positive z-axis, then it is possible to make the y-component of the magnetic field equal to zero at the origin. b. If I4 is directed along the negative z-axis, then it is possible to make the y-component of the magnetic field equal to zero at the origin. c. If I4 is directed along the positive z-axis, then it is possible to make the x-component of the magnetic field equal to zero at the origin. d. If I4 is directed along the negative z-axis, then it is possible to make the x-component of the magnetic field equal to zero at the origin.
6) Another wire is now added, also aligned with the z-axis at (x,y) = (0, -22.5 cm) as shown. This wire carries current I4 A. Which of the following statements is true? a. If I4 is directed along the positive z-axis, then it is possible to make the y-component of the magnetic field equal to zero at the origin. b. If I4 is directed along the negative z-axis, then it is possible to make the y-component of the magnetic field equal to zero at the origin. c. If I4 is directed along the positive z-axis, then it is possible to make the x-component of the magnetic field equal to zero at the origin. d. If I4 is directed along the negative z-axis, then it is possible to make the x-component of the magnetic field equal to zero at the origin.
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