Physics 2212 Homework 7 (due: April 19) 1.The magnetic field at the center of a 1.0-cm-diameter loop is 6 mT. What is the current in the loop? 2. Two concentric current loops lie in the same plane. The smaller loop has a radius of 3.0 cm and a current of 12 A. The bigger loop has a current of 20 A. The magnetic field at the center of the loops is found to be zero. What is the radius of the bigger loop? 3.What are the magnetic field strength and direction at points 1 and 2 shown in the figure. 4.The two insulated wires in the figure cross at a 300angle but do not make electrical contact. Each wire carries a 5.0 A current. Points 1 and 2 are each 4.0 cm from the intersection and equally distant from both wires. What are the magnitude and direction of
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