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1. |
Two small diameter 10gm dielectric balls can slide freely on a vertical channel. Each carry a negative charge of 1μC. 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 | |