Electrical energy and electrical power — Core Learning Objectives

Note
  • Understand that electric circuits transfer energy from a source of electrical energy, such as an electrical cell or mains supply, to the circuit components and then into the surroundings
  • Recall and use the equation for electrical power P = IV
  • Recall and use the equation for electrical energy E = IVt
  • Define the kilowatt-hour (kWh) and calculate the cost of using electrical appliances where the energy unit is the kWh
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