Two Long Straight Parallel Wires Separated by a Distance of 20

question 53

Multiple Choice

Two long straight parallel wires separated by a distance of 20 cm carry currents of 30 A and 40 A in opposite directions. What is the magnitude of the resulting magnetic field at a point that is 15 cm from the wire carrying the 30-A current and 25 cm from the other wire?

• A) 51 μT
• B) 33 μT
• C) 72 μT
• D) 64 μT
• E) 46 μT

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