Q48: A solenoid of radius r = cm and length , l= cm has turns and carries A.
(a) Calculate the flux through the surface of a disk-shaped area of radius R = cm that is positioned perpendicu- lar to and centered on the axis of the solenoid asshown in Figure P30.48a.
(b) Figure P30.48b shows an enlarged end view of the same solenoid. Calculate the flux through the tan area, which is an annulus with an inner radius of a = cm and an outer radius of b = cm.
pi =
g =
u =