< FHSST Physics < Electrostatics

Important Equations and Quantities

**Table 12.1:** Units used in Electrostatics
Units
Quantity	Symbol	Unit	S.I. base units		Direction
charge	q or Q	C (coulomb)	A·s		--
force	${\overrightarrow {F}}$	N (newton)	kg·m/s² or kg·m·s²		yes
mass	m	kg (kilogram)	kg		--
acceleration	${\overrightarrow {a}}$	metre per second squared	m/s² or m·s²		yes
radial distance	r	m (metre)	m		--
electric field	${\overrightarrow {E}}$	N/C or V/m	kg·m/(A·s³) or kg·m·A^−-1·s⁻³		yes
work	W	J (joule)	kg·m²/s² or kg·m²·s⁻²		--
potential difference	V	V (volt)	kg·m²/(A·s³) or kg·m²·A⁻¹·s⁻³		--

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