A flat sheet of paper of area 0.260{\rm m^{2}} is oriented so that the normal to the sheet is at an angle of 54^\circ to a uniform electric field of magnitude 18{\rm N/C} .
A. Find the magnitude of the electric flux through the sheet.
B.Does the answer to part A depend on the shape of the sheet?
C. For what angle \phi between the normal to the sheet and the electric field is the magnitude of the flux through the sheet largest?
D. For what angle \phi between the normal to the sheet and the electric field is the magnitude of the flux through the sheet smallest?