Electrical power

Calculating power

There are loads of different ways we can calculate the power:

P=\frac{\Delta E}{\Delta t}

P=IV

P=I^2R

P=\frac{V^2}{R}

Question	Answer
What is the formula for power in terms of energy and time?	P=\frac{\Delta E}{\Delta t}
What is the formula for electrical power in terms of current and voltage?	P=IV
How do you calculate electrical power using current and resistance?	P=I^2R
How do you calculate electrical power using voltage and resistance?	P=\frac{V^2}{R}