A 20-M Wire Carries a Current of 15 a Directed Along

question 49

Multiple Choice

A 2.0-m wire carries a current of 15 A directed along the positive x axis in a region where the magnetic field is uniform and given by B = (30 -40) mT.What is the resulting magnetic force on the wire?

• A)(+1.2 ) N
• B)(-1.2 ) N
• C)(-1.5 ) N
• D)(+1.5 ) N
• E)(+0.90 ) N

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