Four long, straight wires are parallel to each other; andtheir cross-section for
ID: 2153808 • Letter: F
Question
Four long, straight wires are parallel to each other; andtheir cross-section forms a square. Each side of the square is0.020 m as shown in the figure. If each wire carries a currentof 8.0 A in the direction shown in the figure, determine themagnitude of the total magnetic field at P, the center of thesquare.
Four long, straight wires are parallel to each other; andtheir cross-section forms a square. Each side of the square is0.020 m as shown in the figure. If each wire carries a currentof 8.0 A in the direction shown in the figure, determine themagnitude of the total magnetic field at P, the center of thesquare.Explanation / Answer
Zero. Because magnetic field from a side is cancelled by that from a side opposite to this side.