Two Long Parallel Wires That Are 0

question 16

Multiple Choice

Two long parallel wires that are 0.30 m apart carry currents of 5.0 A and 8.0 A in the opposite direction.Find the magnitude of the force per unit length that each wire exerts on the other wire and indicate if the force is attractive or repulsive.(μ₀ = 4π × 10^-7 T ∙ m/A)

• A)2.7 × 10^-5 N repulsive
• B)7.2 × 10^-5 N repulsive
• C)3.4 × 10^-5 N attractive
• D)2.7 × 10^-5 N attractive
• E)7.2 × 10^-5 N attractive

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