FIGURE 28-7
-Two parallel segments of wire, of length L = 0.8m are positioned a distance d = 1 m apart as shown in Fig. 28-7. Calculate the magnetic field at point P located half-way between the two segments. (Each segment carries and electric current I = 10 A in the directions indicated.)
A)8 μT
B)3 μT
C)1 μT
D)0.5μT

Question

FIGURE 28-7 
-Two parallel segments of wire, of length L = 0.8m are positioned a distance d = 1 m apart as shown in Fig. 28-7. Calculate the magnetic field at point P located half-way between the two segments. (Each segment carries and electric current I = 10 A in the directions indicated.)
A)8 μT 
B)3 μT 
C)1 μT 
D)0.5μT

Quizplus · Accepted Answer

The magnetic field at point P due to the left segment is equal in magnitude and opposite in direction to the magnetic field due to the right segment. Therefore, the net magnetic field at point P is zero.

FIGURE 28-7 -Two Parallel Segments of Wire, of Length L = 0.8m