(15 pts.)  Two very large parallel plates measuring 2.0 m x…

(15 pts.)  Two very large parallel plates measuring 2.0 m x 2.0 m are separated by a d = 0.0040m gap.  A power source with potential difference of 180 V is connected across the plates. a)  Find the capacitance of the parallel plates. b)  Find the magnitude of the Electric field between the plates? c)  A disk with a radius of 0.50 m is placed between the plates, such that its area is parallel to the plates (shown with separation d exaggerated.)  Find the total flux through the area of the disk.

(5 pts) Spheres A, B, and C are initially neutral.  Then +19…

(5 pts) Spheres A, B, and C are initially neutral.  Then +19μC of charge is transferred from sphere A to sphere B, and –6μC of charge is transferred from sphere A to sphere C.  After the transfers, how many excess electrons does sphere A have?  (Numerical answer.)