Multiple Choice
A single current-carrying circular loop of radius R is placed next to a long, straight wire, as shown in the figure. The current I in the wire flows to the right. In which direction must current flow in the loop to produce a net magnetic field of zero at its center? 
A) counterclockwise
B) clockwise
C) It could be either clockwise or counterclockwise.
D) The current in the loop should be zero.
Correct Answer:
Verified
Correct Answer:
Verified
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