1. The problem statement, all variables and given/known data A current-carrying circular loop of radius R is placed next to a long straight wire, as shown in the diagram below. The current in the straight wire points to the right and is of magnitude 3 A. see diagram: http://www.webassign.net/userimages/ikoskelo@sfsu/loop_straight-wires-B.jpg In order to produce a net magnetic field of zero in the center of the circular loop, the current in the loop itself must be: size: _____A? direction: counterclockwise? clockwise? n/a current is zero 2. Relevant equations Bwire=μI/2∏R , Bloop=μI/2R 3. The attempt at a solution For the net B to be zero, Bwire must equal Bloop. I got this part correct, the answer to part a) is .63662A I said the direction is clockwise because the magnetic field created by the loop must go in the same direction as the wire (out of the page). My online homework says this is wrong. WHY is this wrong?!