If 600 J of work is required to move 50 coulombs of charge
between point A and point B in an electric field with an
intensity of 120 N/C, what is the distance between these
points?
a 25 m
b
10 m
C
5 m
d
18 m
e
15 m

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?