Two Concentric Circular Wire Loops in the Same Plane Each

question 54

Multiple Choice

Two concentric circular wire loops in the same plane each carry a current. The larger loop has a current of 8.46 A circulating clockwise and has a radius of 6.20 cm. The smaller loop has a radius of 4.42 cm. What is the magnitude and direction of the current in the smaller loop if the total magnetic field at the center of the system is zero?

• A) 6.03 A CCW
• B) 6.03 A CW
• C) 12.8 A CCW
• D) 12.8 A CW

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