A Solenoid Is Made Up of 100 Turns of a Wire

question 50

Multiple Choice

A solenoid is made up of 100 turns of a wire carrying 0.25 A of current,and is 5.0 cm long.The radius of the solenoid is 1.5cm.You are looking at the solenoid end-on,such that the current circulates counter-clockwise from your point of view.A complete circuit is made by having the wire from one end of the solenoid connect to the wire at the other end,and running down the middle of the solenoid,therefore carrying current in the +z direction along the z-axis.What is the magnetic field at a point (x,y) = (-0.75 cm,0.0 cm) ?

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