the lowest value resistor. 4.7.2.4 Circuit diagrams use Recall circuit symbols. 0.5 Ask questions such as: Set up simple circuits standard symbols. from circuit diagrams. Identify circuit symbols Why are circuit symbols Circuits need to include used in a circuit. used? voltmeters and How are the electrical Construct circuit ammeters so that components connected diagrams standard students are of how together to form a circuit? symbols. these devices are Where does the energy in connected. a circuit come from? Play a game or bingo with electrical symbols. 4.7.2.5 Cells and batteries supply Describe the flow of 1 What is the difference between Use an oscilloscope to current that always passes in electrons in a d.c. a.c. and d.c.? display a.c. and d.c. the same direction. This is circuit as being in one signals. What are common sources of called direct current (d.c.). direction only. a.c. and d.c.? An alternating current (a.c.) some common Research the use of a.c. and is one that changes direction. sources of a direct d.c. Find out why the USA In the UK a.c. supply the current including cells, used d.c. then changed to a.c. current changes direction 50 batteries and solar times per second. cells.
the lowest value resistor. 4.7.2.4 Circuit diagrams use standard symbols. Recall circuit symbols. Identify circuit symbols used in a circuit. Construct circuit diagrams standard symbols. 0.5 Ask questions such as: Why are circuit symbols used? How are the electrical components connected together to form a circuit? Where does the energy in a circuit come from? Play a game or bingo with electrical symbols. Set up simple circuits from circuit diagrams. Circuits need to include voltmeters and ammeters so that students are of how these devices are connected. 4.7.2.5 Cells and batteries supply current that always passes in the same direction. This is called direct current (d.c.). An alternating current (a.c.) is one that changes direction. In the UK a.c. supply the current changes direction 50 times per second. Describe the flow of electrons in a d.c. circuit as being in one direction only. some common sources of a direct current including cells, batteries and solar cells. 1 What is the difference between a.c. and d.c.? What are common sources of a.c. and d.c.? Research the use of a.c. and d.c. Find out why the USA used d.c. then changed to a.c. Use an oscilloscope to display a.c. and d.c. signals.
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