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A solenoid is designed to produce a magnetic field of 0.0570 T at its center. It...

A solenoid is designed to produce a magnetic field of 0.0570 T at its center. It has a radius of 1.50 cm and a length of 30.0 cm, and the wire can conduct a maximum current of 15.0 A. (a) What is the minimum number of turns per unit length that the solenoid must have? (b) What is the total length of wire required?

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