The two wires shown in the figure below are separated by d = 10.4 cm and carry c

Question

The two wires shown in the figure below are separated by d = 10.4 cm and carry currents of I = 4.90 A in opposite directions.

(a) Find the magnitude and direction of the net magnetic field at a point midway between the wires.

(b) Find the magnitude and direction of the net magnetic field at point P1, 10.4 cm to the right of the wire on the right.

(c) Find the magnitude and direction of the net magnetic field at point P2, 2d = 20.8 cm to the left of the wire on the left.

magnitude     ?T direction     ---Select--- into the page out of the page toward the top of the page toward the bottom of the page toward the left side of the page toward the right side of the page The magnitude is zero.

Explanation / Answer

Solution: (a) For a point midway between two wires, both magnetic fields due to the current carrying wire point into the page. So, net magnetic field = 2 x (2?0I/2?d) = 37.6 ?T.

(b) Net magnetic field at P1 = ?0I/2?d - ?0I/4?d = 4.71 ?T and pointing along out of the page.

(c) Net magnetic field at P2 = ?0I/4?d - ?0I/6?d = (4.71

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