Three equal charges of 0.5 uC lie at the corners of an equilateral triangle ABC of side a. Find the force on the charge at point A if a = 20 cm .
Please see the attachment for the diagram.
Start by ignoring that the charge at A exists, and calculate the magnitude of the force (I'll call this F. You must find this yourself using the formula). The force will be 180 degrees at point B and ...
Solution does not compute the value per say, but gives detailed guidance about how you can calculate it.