It is required to hold equal charges , q , in equilibrium at the corner of a square What charge when placed at the center of the square will do this?

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Dear Student,
$I f e q u a l c h a r g e s a r e p l a c e d a t c o r n e r o f s q u a r e t h a n t h e r e i s n o n e e d t o p l a c e a n y c h a r g e a t c e n t e r A s t h s e s w i l l b a l e n c e i t s e l f t o e a c h o t h e r m e a n s f o r c e d u e t o o t h e r t h r e e c h a r g e s o n 4 t h w i l l c a n c e l t o e a c h o t h e r$
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It is required to hold equal charges , q , in equilibrium at the corner of a square What charge when placed at the center of the square will do this?

Dear Student, If equal charges are placed at corner of square than there is no need to place any charge at center As thses will balence itself to each othermeans force due to other three charges on 4th will cancel to each other regards