Magnetic flux. A straight wire carries a current I = 10 A and passes above a loop of radius a = 0.1 m as shown in Figure 8.48.
(a) If the wire passes as in Figure 8.48a, show from symmetry considerations that the total flux through the loop is zero, regardless of how close the loop and the wire are.
(b) If the loop is moved sideways as in Figure 8.48b, calculate the total flux through the loop. Assume the loop and wire are in the same plane.
