We read every piece of feedback, and take your input very seriously.
To see all available qualifiers, see our documentation.
$$\mathbf{F}=\dfrac{1}{4\pi\varepsilon_0}q_1 q_2\dfrac{\mathbf{a}_D}{D^2}\quad \text{(N)} $$
$$\mathbf{E}=\dfrac{q}{4\pi\varepsilon_0D^2}\mathbf{a}_D\quad \text{(V/m)} $$