- If the two positive charges on the bottom side of the square in
the previous example were removed, what would be the net electric
force on the negative charge? Write your answer in terms of the
force that each positive charge exerts on the negative charge.
Here’s How to Crack It
If we break down F 1 and F 2 into horizontal and vertical components, then the two
horizontal components cancel each other out, and the two vertical components add.