A solenoid 4cm in diameter and 20cm in length has 250 turns and carries a current of 15A. Calculate the flux through the surface of a disc of 10cm radous that is positioned perpendicular to and centered on the axis of the solenoid. Share with your friends Share 1 Shobhit Mittal answered this D= 4 cm , L=20 cm , n=250 ,I=15 AB=μ0nILA=π0.022flux=B.A=4π*10-7*250*15*π0.0220.2 weberRegards 0 View Full Answer