A solenoid 22.0 cm longand with a cross-sectional area of 0.500cm² contains 415turns of wire and carries a current of 85.0 A. (a) Calculate the magnetic field in thesolenoid. 1 T (b) Calculate the energy density in the magnetic field if thesolenoid is filled with air. 3 2 J/m (c) Calculate the total energy contained in the coil's magneticfield (assume the field is uniform). 3 J (d) Calculate the inductance of the solenoid. H

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