A) \[\frac{4{{v}^{2}}}{\sqrt{5}g}\]
B) \[(g=10m/{{s}^{2}})\]
C) \[800N\]
D) None of these
Correct Answer: B
Solution :
The equipotential surface is perpendicular to electric lines of force. The equation of surface perpendicular to x-axis is x = constant Hence, option is correct
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