| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| permittivity of free space value | 0.59 | 0.9 | 7528 | 78 | 32 |
| permittivity | 1.19 | 0.3 | 150 | 7 | 12 |
| of | 0.98 | 0.8 | 578 | 28 | 2 |
| free | 0.22 | 0.6 | 1210 | 5 | 4 |
| space | 0.05 | 0.6 | 5005 | 98 | 5 |
| value | 0.72 | 0.9 | 5463 | 41 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| permittivity of free space value | 1.7 | 1 | 749 | 43 |
| permittivity of free space value si units | 0.91 | 0.4 | 3470 | 85 |
| permittivity of free space value in air | 1.12 | 0.2 | 2124 | 100 |
| permittivity of free space constant value | 1.07 | 1 | 602 | 78 |
| value of electric permittivity of free space | 1.43 | 0.6 | 5620 | 7 |
| permittivity of free space constant e0 value | 0.38 | 0.1 | 8046 | 68 |
| units of permittivity of free space | 0.04 | 0.1 | 6105 | 81 |
| value of permittivity of free space | 0.53 | 0.8 | 3799 | 26 |
