MAINS+ELECTRICITY

IGCSE PHYSICS > ELECTRICITY =MAINS ELECTRICITY= Objectives printed like this are Core Curriculum: papers 1 and 2 media type="custom" key="12909456"
 * MAINS ELECTRICITY || ENERGY AND PD || ELECTRIC CHARGE ||
 * Objectives printed like this are Extended Curriculum: paper 2 only **



2.2 recall the hazards of electricity including frayed cables, long cables, damaged plugs, water around sockets, and pushing metal objects into sockets

2.3 describe the uses of insulation, double insulation, earthing, fuses and circuit breakers in a range of domestic appliances

2.4 know some of the different ways in which electrical heating is used in a variety of domestic contexts 2.5 understand that a current in a resistor results in the electrical transfer of energy and an increase in temperature

See [|BATTERY-RESISTOR SIMULATION] on PHET or download from Studywiz for speed 2.6 recall and use the relationship: power = current × voltage P = I × V and apply the relationship to the selection of appropriate fuses

2.7 use the relationship between energy transferred, current, voltage and time: energy transferred = current × voltage × time E = I × V × t 2.8 recall that mains electricity is alternating current (a.c.) and understand the difference between this and the direct current (d.c.) supplied by a cell or battery.