- #1

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## Homework Statement

## Homework Equations

E = kq/r

^{2}

V = -∫ E ⋅ ds

W = -Vq

## The Attempt at a Solution

a) I just summed up the electric fields: +ek/a

^{2}+ek/a

^{2}-ek/a

^{2}so I get +ek/a

^{2}as a result. Not sure if this is correct since -e has a y component so I was thinking to use sin but not sure which angle to use.

b) i would just plug in the electric field from part a and plug in a as the distance, so V = -Ea

c) W = -Vq, get the potential from b and for q get the sum of charges. Not sure if that's a correct approach.

d) I'm not sure what equation to use for this.