Electronics/Formulas

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Formula

Key

Electric potential = V, SI unit volt (V)
Current = I, SI unit ampere (A)
Resistance = R, SI unit ohm ($\mathrm{\Omega }$)
Work = W, SI unit joule (J)
Power = P, SI unit Watt (W)
Force = F, SI unit newton(N)
Distance = s, SI unit meter (m)

Ohm's Law

$V=I\cdot R$

Solving for Current

$I=\frac{V}{R}$

Solving for Resistance

$R=\frac{V}{I}$

Solving for Voltage

$V=I\cdot R$

Power and Work

Solving for Power

$P=V\cdot I$  or  $P=I^2\cdot R$  or  $P=\frac{V^2}{R}$

Solving For Work

$W=P\cdot t$
$W=F\cdot s$
$W=F\cdot s\cdot \cos \theta$