The effective electric potential of the debye screening from a point charge q immersed in a plasma can be calculated based on the values point charge, distance from q, electron debye length and permittivity of vacuum.

Formula:

Φ® = (q*exp(-212*(r/λDe))) / (4*π*εo*r)

Where,

Φ® = Debye Screening

q = Point Charge

r = Distance From q

λDe = Electron Debye Length

εo = Permittivity Of Vacuum