Calculation: 0kMkWI - 1

E__env =

k* q_₀

/ ( ε* r^²)

E__env =

k* q_₀

/ ( ε* r^²)

E_{env}

\frac{k\cdot q_0}{\varepsilon\cdot r^{2}}

E__env =

k* q_₀

/ r^²/ ε

E_{env}

\frac{k\cdot q_0}{r^{2}\cdot \varepsilon}