Example 1
A 1 µC charge creates a field of about 8.99 kN/C at 1 m.
Mendeleev
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Physics tools › Electric field of a point charge
Mendeleev · Physics
Electric field of a point charge
The electric field created by an isolated point charge decreases with the square of the distance.
Formula usedE = k|Q|/r²
Visual cue · field / circuit
Calculate
Electric field of a point charge
What do the symbols mean?
Eelectric field
Qsource charge
rradius
Two worked examples
Example 2
At twice the distance, the field is four times weaker.
Good to knowThe calculator gives the field magnitude in vacuum. The direction is away from a positive charge and toward a negative charge.