A steam iron rated at 1.2 kW is used for 30 min, a laptop rated at 65 W is used for 4.0 h, and an LED lamp rated at 8 W is used for 5.0 h. Electricity costs 26 p26\ \mathrm{p}26 p per kWh\mathrm{kWh}kWh.
Calculate the total cost of the electrical energy transferred to these appliances.
81 exam-style questions on Edexcel GCSE Physics 10.4 Mains electricity, covering 10.4.1 Direct and alternating current, 10.4.2 Live, neutral and earth wires; safety, 10.4.3 Mains wire potential differences and dangers, and 10.4.4 Power ratings and energy use. Each one has a worked solution and a mark scheme showing where the marks go.