FIGURE 22-9
-A long straight wire carrying a 4-A current is placed along the x-axis as shown in Figure 22-9. What is the direction of the magnetic field at a point P, located at y = 0.02 m, due to this wire?

Question

FIGURE 22-9 
-A long straight wire carrying a 4-A current is placed along the x-axis as shown in Figure 22-9. What is the direction of the magnetic field at a point P, located at y = 0.02 m, due to this wire?

Quizplus · Accepted Answer

Using the right-hand rule, we curl the fingers of our right hand in the direction of the current (which is along the x-axis). Our thumb then points out of the plane of the page, which is the direction of the magnetic field at point P.

FIGURE 22-9 -A Long Straight Wire Carrying a 4-A Current Is Placed