One by four pi epsilon not का मान होता है? July 14, 2025July 14, 2025 by Biharboard24@gmail.com \( \frac{1}{4\pi\varepsilon_0} \) का मान होता है? [A] \( 9 \times 10^9 \, \text{Nm}^2/\text{C}^2 \) [B] \( 9 \times 10^{-9} \, \text{Nm}^2/\text{C}^2 \) [C] \( 9 \times 10^{12} \, \text{Nm}^2/\text{C}^2 \) [D] \( 9 \times 10^{-12} \, \text{Nm}^2/\text{C}^2 \) Show Answer ✔ सही उत्तर: (A) \( \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2/\text{C}^2 \)