# Two Charges on a Triangle

1. Mar 16, 2014

### Encrypted1

1. The problem statement, all variables and given/known data

Two charges of opposite sign and equal magnitude Q = 0.82 C are held 2.0 m apart as shown in the figure.

A) Determine the magnitude of the electric field at the point P.
B) Determine the electric potential at the point P.
C) How much work is required to move a 1.0 C charge from infinity to the point P?

2. Relevant equations

EPE=kq/r

3. The attempt at a solution

I am really stuck...I have no clue where to start
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Mar 16, 2014

### majormaaz

Hey there!
You have 3 problems, but only one equation - you're going to need the equation for electric field, and electric potential.

I'm just going to give you a pointer for now - electric field is a vector quantity, so you'd be best off if you tried to break the electric field of each charge into its respective x and y components. Potential and Potential Energy are scalar quantities, so direction doesn't matter - the distance between the charge and the point does.