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Point charges +4q, -q are kept on the x-...

Point charges `+4q, -q` are kept on the `x`-axis at points `x=0,x=a` and `X=2a` respectively, then

A

all the charges are in stable equilibrium

B

all the charge are in unstable equilibrium

C

only the middle charge is in stable equilibrium

D

only middle charge is in unstable equilibrium

Text Solution

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The correct Answer is:
B

All charges are in unstable equilibrium.
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RESONANCE-ELECTROSTATICS-Exercise
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