# Joint Entrance Examination/2000 Screening/Q017 Electrostats - energy of a configuration

 Welcome to the Highschool Help Forum! The forum is currently in "Beta" stage of development. You can ask questions and answer/discuss them. The basic functionalities are present. What's required is a more aesthetic look to the Static pages and a more user friendly setup. This will happen over the time gradually as we start creating some content. The site has a lot of tools, like posting mathematical calculations, images and diagrams; categorizing questions and so on. Having them here is NO GOOD unless you know how to use them. I am thoroughly against compiling a list of these features and then writing about them. As soon as you do not understand how to do something or use a certain feature, report that on "How To"s Section of the forum. Your queries will be answered there. If you have any ideas/discussion regarding the site/comments, please go to Discussions regarding Highschool Help Forum Lastly, thanks for joining in the site's development process! It matters!

#### Browse All Available Categories

Physics: Introductory PhysicsMechanicsHeatWaves and OscillationsElectricity And MagnetismOpticsModern Physics
Mathematics: AlgebraTrigonometryCo-Ordinate (Analytical) GeometryCalculusVectors And 3D GeometryMiscellaneous Topics
Chemistry: General Chemistry and Physical ChemistryOrganic ChemistryInorganic Chemistry
Biology: General BiologyAnatomyPhysiologyBotanyZoology

# Original Question by Dharav talk

Here's the question...
 Three charges Q, +q and +q are placed at the vertices of a right angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to... 250px ${\displaystyle {\frac {-q}{1+{\sqrt {2}}}}}$ ${\displaystyle {\frac {-2q}{2+{\sqrt {2}}}}}$ ${\displaystyle -2q}$ ${\displaystyle +q}$Posted by Dharav talk 04:46, 18 August 2009 (UTC)

## What's Up?

Latest discussions on the forum

Electricity-And-Magnetism-Help

Physics-Help

 a a