Q. Coulomb's constant in SI unit is

एसआई इकाई में कूलम्ब स्थिरांक है

9×10⁹ Nm²/C²
9×10⁹ एनएम²/सी²

8.85×10⁻¹² C²/Nm²

1.6×10⁻¹⁹ C
1.6×10⁻¹⁹ सी

3×10⁸ m/s
3×10⁸ मी/से

Coulomb’s constant $k$ is approximately:

k = \frac{1}{4\pi \varepsilon_0} \approx 9 \times 10^{9} \, \text{Nm}^2/\text{C}^2

where $\varepsilon_0$ is the permittivity of free space.

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