ElectrostaticsHard
Question
Three charge , +q and +q are placed at the vertices of a right angle triangle (isoscale triangle) as shown. The net electrostatic energy of the configuration is zero, Then Q is equal to
Options
A.
B.
C.-2q
D.+q
Solution
Net electrostatic energy of the configuration will be
Here, 
Putting U = 0 we get, Q =
Here, Putting U = 0 we get, Q =
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