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:
A
B
C
-2 q
D
+ q
Text Solution
Verified by ExpertsThe correct answer is:
B
Net electrostatic energy of the configuration will be
U = K 
Here K = 
U = 0 gives
Q = 
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