A Long Solenoid (Diameter = 5

Multiple Choice

A long solenoid (diameter = 5.00 cm) is wound with 2000 turns per meter of thin wire through which a constant current is maintained.A wire carrying 8.50 A is inserted along the axis of the solenoid.The magnitude of the magnetic field at a point 5.00 mm from the axis is 0.650 mT.What is the current through the solenoid?

A) 0.292 A
B) 517 A
C) 0.220 A
D) 7.80 mA
E) 22.7 A