Electrical Appliances _ GCSE Physics

The video tutorial explains how electrical energy is measured in kilowatt hours and joules. It provides formulas for calculating energy transferred, using examples of a 2 kilowatt electrical fire and a 20 watt lamp. The tutorial also covers how electricity meters measure usage and how to calculate the cost of electricity based on units consumed.

What is the formula used to calculate energy transferred in kilowatt hours?

What does the variable 'P' represent in the energy transfer formula?

How much electrical energy does a 2 kilowatt fire use when switched on for 5 hours?

How is energy transferred in joules calculated using the formula E equals P times t?

If five units of electricity are used at a cost of eight p per unit, what will be the total cost?