Two Very Long Parallel Wires Carry Currents in the Positive

question 87

Multiple Choice

Two very long parallel wires carry currents in the positive x direction. One wire (current = 15 A) is coincident with the x axis. The other wire (current = 50 A) passes through the point (0, 4.0 mm, 0) . What is the magnitude of the magnetic field at the point (0, 0, 3.0 mm) ?

• A) 3.8 mT
• B) 2.7 mT
• C) 2.9 mT
• D) 3.0 mT
• E) 0.6 mT

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