Electric energy and methods of energy saving

At the end of this activity, students should be able to:
– describe the work parameters of an electrical appliance
– calculate the energy absorbed by a given device when its power and working time are given, and estimate the cost of the energy
– read and interpret the data displayed by an electricity meter
– determine the power of a device given the readings of the electricity meter
– interpret the information on the energy consumption label of a given device.