Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions.

Question

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) Answer 5.0 × 10-5 T 4.0 × 10-5 T 1.0 × 10-5 T 2.0 × 10-5 T 3.0 × 10-5 T 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) 5.0 × 10-5 T 4.0 × 10-5 T 1.0 × 10-5 T 2.0 × 10-5 T 3.0 × 10-5 T 5.0 × 10-5 T 4.0 × 10-5 T 1.0 × 10-5 T 2.0 × 10-5 T 3.0 × 10-5 T

Explanation / Answer

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