What is the magnitude of the magnetic field at point P in the figure if a = 2.0 cm, b = 4.5 cm, and I = 5.0 A?

A. 87 ?T, into the paper
B. 87 ?T, out of the paper
C. 0.23 mT, out of the paper
D. 0.23 mT, into the paper
E. 23 ?T, into the paper


Answer: A

Physics & Space Science

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