Example B (X) • A copper rod 0.150m long with mass 0.0500kg is suspended from 2 flexible wires. A B field of 0.550T (8) (8) points is perpendicular to the wires (as shown). (8) magnetic •What is the direction and magnitude of the current needed to levitate the copper rod? Example 3.00 m -0,95 m A long, straight wire containing a semicircular region of radius 0.95m is placed in a uniform magnetic field of magnitude 2.20T as shown in the figure. What is the net magnetic force acting on the wire when it carries a current of 3.40A ?

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