Combined ScienceCode 5129
Uses of electricity
What this topic asks you to be able to do
- Name everyday jobs electricity does, including heating, lighting, battery charging and powering motors and electronic systems
- State from memory the equation “power = current × voltage”, P = IV, and use it
- State from memory the equation “energy = current × voltage × time”, E = IVt, and use it
- Define the kilowatt-hour (kWh), then work out what it costs to run electrical appliances where energy is given in kWh