Electric field definition (E = F/q₀ (test charge))

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E = F/q₀ (test charge)

What each symbol means

SymbolWhat it stands for
q_0Small positive test charge
\vec{E}Electric field (N/C or V/m)
\vec{F}Force on test charge q₀

When to use this

Limit q₀ → 0 so it does not disturb source distribution.