electric power

Last updated 2023.02.21 Edit Source

• Physics
• Electricity

electric work in a unit of time
$$P=\frac{W}{t}=\frac{V\cdot I\cdot \cancel{ t } }{\cancel{ t }}=V\cdot I$$
resistance

$$P=\frac{V^{2}}{R}$$
$$P=I^{2}\cdot R$$ ^321011

Current of a toaster
$P=1200\text{W}$ (power)
$V=230\text{V}$ (voltage - feszültség)
$I=?$ (current)
$$P=V\cdot I$$
$$I=\frac{P}{V}=\frac{1200}{230}=5.2\text{A}$$