PhysicsCode 5054
Uses of electricity
What this topic asks you to be able to do
- Give everyday applications of electricity, including heating, lighting, charging batteries and running motors and electronic systems
- Give the benefits of wiring lamps in parallel within a lighting circuit
- Recall and apply the formula power = current × voltage, written as P = IV
- Recall and apply the expression energy = current × voltage × time, written in the form E = IVt
- Define the kilowatt-hour (kWh) and work out the cost of running electrical appliances when energy is given in kWh