Two Long, Parallel Wires Are Spaced 1 M Apart in Air

question 28

Multiple Choice

Two long, parallel wires are spaced 1 m apart in air, and you have established a current of 1 A in each. The force per unit length that each wire exerts on the other is

• A) 4\(\pi\)µ_{0 .}
• B) 2\(\pi\)µ_{0 .}
• C) µ_{0 .}
• D) µ₀/4\(\pi\)
• E) µ₀/2\(\pi\)

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