Electrical Power

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IGCSE Physics Lessons
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A series of free GCSE/IGCSE Physics Notes and Lessons.

Power of electrical components
How to use two different equations to calculate the power of components in electrical circuits?
P = IV
P = I2R

Electrical power (P = IV = I2R = V2/R)
An explanation of what power is, and a derivation of the three formulae for electrical power.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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