A) will be in equilibrium if the charges rotate about the centre of the triangle
B) can never be in equilibrium
C) will be in equilibrium if the charges have the same magnitudes but different signs
D) will be in equilibrium if the charges have different magnitude and different signs.
Correct Answer: B
Solution :
Horizontal force cancil out at A and and C \[{{F}_{\upsilon }}\]at \[A=2F\sin 60\] \[{{F}_{\upsilon }}\]at \[B=F\sin 60\] \[{{F}_{\upsilon }}\]at\[C=F\sin 60\]and point AB and C forces acts hence no equilibrium.You need to login to perform this action.
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