Two Long Parallel Wires Carry Currents of 20 a and 5.0

question 41

Multiple Choice

Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions.The wires are separated by 0.20 m.What is the magnitude of the magnetic field midway between the two wires? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A)1.0 × 10^-5 T
• B)2.0 × 10^-5 T
• C)3.0 × 10^-5 T
• D)4.0 × 10^-5 T
• E)5.0 × 10^-5 T

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