A very long straight wire carries a 12-A current eastward and a second very long straight wire carries a 14-A current westward. The wires are parallel to each other and are 42 cm apart. Calculate the force on a 6.4 m length of one of the wires
(?0 = 4? × 10-7 T ? m/A)
A) 5.1 × 10-4 N
B) 2.2 × 10-4 N
C) 5.1 × 10-6 N
D) 8.0 × 10-5 N
E) 8.0 × 10-7 N
A
Physics & Space Science
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