1.) The field just outside a 4.49cm -radius metal ball is 6.08×102N/C and points toward the ball. What charge resides on the ball?
2.) A flat circle of radius 20 cm is placed in a uniform electric field of magnitude 6.6×102N/C
a) What is the electric flux through the circle when its face is perpendicular to the field lines?
b) What is the electric flux through the circle when its face is at 30 to the field lines?
c) What is the electric flux through the circle when its face is parallel to the field lines?