1 If the battery of a cell phone works at 120 V and has to deliver a current of 09 A while playing music what is the required power. Electric power is usually produced by electric generators but can also be supplied by sources such as electric batteriesIt is usually supplied to businesses and homes as domestic mains electricity by the electric power industry. Also means multiply A more productive method is to eliminate parts of the formula.
Electrical Potential or Voltage Formula in DC Circuits.
Electric power voltage difference x current. So the formula V1IR1 is valid but not very useful. Electrical Current Formulas in Three Phase AC Circuit. Electric energy electric power time P t Thus the formula for electric energy is given by.