2.1 use the following units: ampere (A), coulomb (C), joule (J), ohm (Ω), second (s), volt (V), watt (W).
2.2 understand how the use of insulation, double insulation, earthing, fuses and circuit breakers in a range of domestic appliances.
2.3 understand why a current in a resistor results in the electrical transfer of energy and an increase in temperature, and how this can be used in a variety of domestic contexts
2.4 know and use the relationship:
power = current × voltage
P = I × V or P=VI
and apply the relationship to the selection of appropriate fuses
2.5 use the relationship between energy transferred, current, voltage and time:
energy transferred = current × voltage × time
E = I × V × t OR E =VIt
2.6 know the difference between mains electricity being alternating current (a.c.) and direct current (d.c.) being supplied by a cell or battery.
Use this PowerPoint & Quiz for a quick review…