Answer Happy

29. A solenoid of radius r= 1.25 cm and length - 30.0 cm has 300 turns and carries 12.0 A. (a) Calculate the flux through the surface of a disk-shaped area of radius R = 5.00 cm that is positioned perpendicular to and centered on the axis of the solenoid as shown in Figure P29.29a. (b) Figure P29.29b 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 = 0.400 cm and an outer radius of b=0.800 cm. 7 O R Figure P29.29
29a) What is n for this solenoid? b) What is magnitude and direction of B Inside the solenoid? c) What is the flux thorough the surface with radius R? d) What is the area of the tan area of fig. P29.29? Don't make this harder than it has to be. e) What is the flux through the tan area?