Two small diameter 10gm dielectric balls can slide freely on a vertica – McqOptions

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1.	Two small diameter 10gm dielectric balls can slide freely on a vertical channel. Each carry a negative charge of 1‚âà√≠¬¨‚à´C. Find the separation between the balls if the lower ball is restrained from moving?#
A.	0.5
B.	0.4
C.	0.3
D.	0.2
Answer» D. 0.2

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