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Edexcel IGCSE Physics Topic 2 - Electricity

Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.

• I can use and recall the equations and the units for this unit as shown in the equation sheet

• I can draw series and parallel circuits  Video 1  Video 2  Video 3  Video 4

• I can recall the uses of various circuit components in household appliances including insulation, double insulation, earthing, fuses and circuit breakers

• I can explain why current increases can result in a temperature increase on household appliances

• I can recall and use the equation linking power, current and voltage

• I can use the equation linking energy transferred, current, voltage and time

• I can explain the difference between direct current and alternating current

• I can explain when we would use series circuits and when we would use parallel circuits

• I can describe the way current behaves in a series circuit  Video 1Video 2  Video 3

• I can describe the way potential difference behaves in a series circuit

• I can describe the way resistance behaves in a series circuit

• I can describe the way potential difference behaves in a parallel circuit

• I can describe the way resistance behaves in a parallel circuit

• I can draw and explain current-potential difference graphs for ohmic conductors, filament lamps and diodes Video 1  Video 2

• I can explain the change in resistance of a thermistor as the temperature changes Video 1  Video 2

• I can explain the change in resistance of an LDR as the light intensity changes Video 1 Video 2

• I can state that when lamps or LEDs light up they show that current is moving through a circuit

• I can recall and use the equation linking voltage, current and resistance

• I can recall that current is the rate of flow of charge

• I can recall and use the equation linking charge, current and time

• I can state that electric current in solid metallic conductors is a flow of negatively charged electrons

• I can recall why current is conserved at a junction in a circuit

• I can recall that voltage in parallel components is identical

• I can calculate the currents, voltages and resistances of two series circuit components

• I can recall that voltage is the energy transferred per unit charge passed

• I can recall that the volt is a joule per coulomb.

• I can recall and use the equation linking energy transferred, charge and voltage

• I can identify everyday materials which are conductors or insulators

• I can describe a practical investigation showing static electricity forming by friction between insulating materials

• I can explain how static materials can become either positively or negatively charged

• I can recall that like charges repel and unlike charges attract

• I can explain static electricity in terms of moving electrons

• I can explain the dangers of static electricity

• I can explain some uses of static electricity