A single current-carrying circular loop of radius R is
Chapter 22, Problem 103(choose chapter or problem)
A single current-carrying circular loop of radius R is placed next to a long, straight wire, as shown in Figure 2251. The current in the wire points to the right and is of magnitude I. (a) In which direction must current ow in the loop to produce zero magnetic eld at its center? Explain. (b) Calculate the magnitude of the current in part (a).
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