The answer is in the picture.
The first ariplanr was made December 17, 1903
Answer:
The net magnetic field ta the center of square is
.
Explanation:
Current, I = 12 A , side ,a = 10 cm = 0.1 m
Let the magnetic field due to the one side is B.
The magnetic field is given by

Net magnetic field at the center of the square is
B' = 4 B

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