23. Two circular wire loops are coplanar (their areas are in the same plane) and have a...

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23. Two circular wire loops are coplanar (their areas are in the same plane) and have a common center. The outer one carries 10 A in the clockwise direction. To create a zero magnetic field at their common center, what should be the direction of the current in the inner loop? Should its current be 10 A, larger than 10 A, or smaller than 10 A? Explain.

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