A solenoid has 555 closely spaced turns, a length of 12.0 cm, a radius of 3.00 cm, and carries a current of 13.5 A. Determine the magnitude of the magnetic flux through the following. f2R fR R/2 (a) the disk-shaped area of radius twice that of the solenoid that is perpendicular to and centered on the axis of the solenoid as shown in the figure Wb (b) the annulus with an inner radius half that of the solenoid and an outer radius equal to that of the solenoid Wb

A solenoid has 555 closely spaced turns, a length of 12.0 cm, a radius of 3.00 cm, and carries a current of 13.5 A. Determine the magnitude of the magnetic flux through the following. f2R fR R/2 (a) the disk-shaped area of radius twice that of the solenoid that is perpendicular to and centered on the axis of the solenoid as shown in the figure Wb (b) the annulus with an inner radius half that of the solenoid and an outer radius equal to that of the solenoid Wb