Power P = VI Calculator :: Equations

Physics

Power calculator

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Power Equation

$$ P = V I $$

$P \, $ is power in watts (W)
$V \, $ is voltage in volts (V)
$I \, $ is current in amperes (A)

$ P $

= $ V I $

= $ \mathrm{ V } $ $ \times $ $ \mathrm{ A } $

= $ \mathrm{ W } $

= $ \mathrm{ W } $ (to significant figures)

$ V $

= $ \displaystyle{\frac{ P }{ I }} $

= $ \mathrm{ W } $ $ \div $ $ \mathrm{ A } $

= $ \mathrm{ V } $

= $ \mathrm{ V } $ (to significant figures)

$ I $

= $ \displaystyle{\frac{ P }{ V }} $

= $ \mathrm{ W } $ $ \div $ $ \mathrm{ V } $

= $ \mathrm{ A } $

= $ \mathrm{ A } $ (to significant figures)

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