Three Long Wires Parallel to the X Axis Carry Currents

question 39

Multiple Choice

Three long wires parallel to the x axis carry currents as shown. If I = 20 A, what is the magnitude of the magnetic field at the origin?

• A)37 μT
• B)28 μT
• C)19 μT
• D)47 μT
• E)58 μT

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