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:The [[SI Unit]]s of '''electrical power''' are [[Watt]]s.: '''Electrical power''' is the [[Work Done|work done]] by an [[Electrical Current|electrical current]] per unit [[time]]. ===Equations=======Equation 1====''NB: You must remember this equation.'' '''Power''' = (Energy Transferred)/(time) <math>P=\frac{E}{t}</math> Where: <math>P</math> = '''Electrical Power'''. <math>E</math> = [[Electrical Energy Transfer]]red or [[Work Done]] by an [[Electrical Current|electrical current]]. <math>t</math> = The [[time]] over which [[energy]] is [[Energy Transfer|transferred]]. ====Equation 2====''NB: You must remember this equation.'' '''Power''' = (Current) x (Potential Difference) <math>P=IV</math> Where: <math>P</math> = '''Electrical Power'''. <math>I</math> = [[Electrical Current]] through a [[Electrical Component|component]]. <math>V</math> = [[Potential Difference]] across the [[Electrical Component|component]]. ====Equation 3====''NB: You must remember this equation.'' '''Power''' = (Current)² x (Resistance) <math>P=I^2R</math> Where: <math>P</math> = '''Electrical Power'''. <math>I</math> = [[Electrical Current]] through a [[Electrical Component|component]]. <math>R</math> = The [[Electrical Resistance|resistance]] of the [[Electrical Component|component]]. ====Equation 4====''NB: You must remember this equation.'' '''Power''' = (Current) x (Potential Difference) <math>P=\frac{V^2}{R}</math> Where: <math>P</math> = '''Electrical Power'''. <math>V</math> = [[Potential Difference]] across the [[Electrical Component|component]]. <math>R</math> = The [[Electrical Resistance|resistance]] of the [[Electrical Component|component]].