Power is the amount of energy transferred or converted per unit time. Learn how to calculate power in different systems and contexts, such as mechanics, electricity, and thermodynamics, using various formulas and examples. Power is energy flowing! It is measured as energy per unit of time. Energy is in Joules (J). Power is in Joules per second (J/s) which has the... Learn the Power Formula We’ve seen the formula for determining the power in an electric circuit: by multiplying the voltage in “volts” by the current in “amps” we arrive at an answer in “watts.” Let’s apply this to a circuit example: How to Use Ohm’s Law to Determine Current In the above circuit, we know we have a battery voltage of 18 volts and a lamp resistance of 3 Ω. Using Ohm’s Law to determine current, we get: Now that we know the current, we can take that value ... Electric Power Formulas & Equations in DC and AC 1-Φ & 3-Φ Circuits Back to basic, below are the simple Electric Power formulas for Single Phase AC Circuit, Three Phase AC Circuits and DC Circuits. You can easily find electric power in watts by using the following electric power formulas in electric circuits.
