Derive an equation for electric power

1.	Derive an equation for electric power
Answer» SoluTion: Power = Rate of consumption of ENERGY. $\implies$ P = $\sf{\dfrac{E}{t}}$ Where, E is energy and t is time. Energy can be changed into useful work, so we can WRITE above expression as : $\implies$ P = $\sf{\dfrac{<klux>W</klux>}{t}}$ We know that, W = V.Q [ where V is POTENTIAL difference and Q is charge ] $\implies$ P = $\sf{\dfrac{V.Q}{t}}$ Also, $\sf{\dfrac{Q}{t}}$ = I [ CURRENT ] $\implies$ $\large{\boxed{\red{\sf{P\:=\:V.I}}}}$ $\rule{200}2$ Power is rate of doing work. Power can also be said as rate of consumption of energy. It's S.I unit is watt.

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