Three charged particles are collinear and are in equilibrium, then

1.	Three charged particles are collinear and are in equilibrium, then
A.	all the charged particles have the same polarity
B.	the equilibrium is unstable
C.	all the charged particles cannot have the same polarity
D.	Both (b) and (c) are correct
Answer» E.

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Three charged particles are collinear and are in equilibrium, then

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