Name: _______________________

Quiz 4


Ch. 19


1)      3 charges are placed at the corners of a square with 1m sides:  -1mC at bottom left, +3mC at the bottom right, and -2mC at the top left.  Find the amount of work required to move the bottom left charge to infinity? 





















2)      A +2mC charged sphere of mass 0.12 mg is released from rest in a constant gravitational field g=9.8 m/s/s pointing downward and a constant electric field E.  The charge falls straight down.  After it has fallen 1.0 m, it has a speed of 1.8 m/s.


a)      What is the magnitude and direction of the Electric Field?

b)      What is the potential difference between the point from which the charge was released and the point 1.0 m below?