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				| 1. | If two-point charges 'q1,' 'q2' are separated by a distance 'r' in a vacuum, the magnitude of the force (F) between them is given by F = q1q2 / (4πεor2). Here where εo = _________ × 10-12 C2N-1m2. | 
| A. | 1.67 | 
| B. | 9.11 | 
| C. | 8.85 | 
| D. | 5.32 | 
| Answer» D. 5.32 | |