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 [IIT-JEE (Screening) 2000]

Three charges \[Q,\,+q\] and \[+q\] are placed at the vertices of a ri

1.	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 [IIT-JEE (Screening) 2000]
A.	\[\frac{-q}{1+\sqrt{2}}\]
B.	\[\frac{-2q}{2+\sqrt{2}}\]
C.	\[\frac{9}{25}J\]
D.	\[+q\]
Answer» C. \[\frac{9}{25}J\]

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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 [IIT-JEE (Screening) 2000]

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