Two points A and B lie on the two sides of a long, straight wire carrying a current I in the direction indicated in figure below. 4 cm 2 cm A old (magnitude and direction) at point A
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![Two points A and B lie on the two sides of a long, straight wire carrying a current I in the
direction indicated in figure below.
B
4 cm
2 cm
A
a. Calculate the magnetic field (magnitude and direction) at point A.
b. Calculate the magnetic field (magnitude and direction) at point B.
c. Find the change in magnetic field between points A and B.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F670d2990-1a56-4f52-a5cd-1556a15377c7%2F6d20ff6b-6c53-4230-ade6-283c51d55645%2Fjdkgp3a_processed.jpeg&w=3840&q=75)
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