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โโFormula
===Formula===
'''Electric Field Strength''' is given by the general formula:
ย *<math>๐ธ=\frac{๐น}{๐}</math>ย
Where,
ย *๐น is the [[force]] experienced by a [[Electrical Charge|charge]] 'Q' in the field. ย andย *๐ is the [[Electrical Charge|charge]] in that field.ย
The '''Electric field strength''' around a point [[Electrical Charge|charge]] is given by:
ย *<math>๐ธ=๐\frac{๐}{๐_2๐^2}</math>ย
Where:
ย *๐ is the [[Coulomb's Constant|Coulomb's constant]]ย *๐ is the [[Point Charge|point charge]] causing the fieldย andย *๐ is the distance from that [[Point Charge|point charge]]ย
Since;
ย *<math>๐=\frac{1}{4\pi\varepsilon_0}</math>ย
Then:
ย *<math>๐ธ=\frac{1}{4\pi\varepsilon_0}\frac{๐}{๐_2๐^2}</math>ย
or
ย *<math>๐ธ=\frac{๐}{4\pi\varepsilon_0๐_2varepsilon_0๐^2}</math>ย
Where:
ย *<math>\varepsilon_0</math> is the [[Permittivity of Free Space|permittivity of free space]]