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1. |
Value of permeability of tree space in SI units is |
A. | 4?x10-9 WbA-1m-1 |
B. | 4?x10-7 WbA-1m-1 |
C. | 4?x10-10 WbA-1m-1 |
D. | 4?x10-8 WbA-1m-1 |
Answer» C. 4?x10-10 WbA-1m-1 | |