Refresh

What is shown :

• Labels : X and Y distances for the charge you are moving
• Lines/vectors : Electric field lines (with directions) shown in blue

Things to remember:

• You can move any of the charges at any time.
• If you put a charge on top of another, you will get the "net charge".
• When you move the charges, the lines will refresh.
• While the lines are red, they are recalculating .. wait a second.
• When the lines turn blue, they indicate the field directions.
• If you hit the "refresh" button, the charges will reset to original locations.

Your tasks:

• What are the signs of the charges?
• What are the relative sizes of the charges?
• What is the net charge of the system?