Presentation on theme: "Circuit Diagrams Basic Electricity"— Presentation transcript:
1 Circuit Diagrams Basic Electricity (Click the left mouse button to advance to the next slide.)
2 Circuit DiagramsWe do not normally draw the equipment but use symbols as a kind of shorthand.(Write the heading Circuit Diagrams in your exercise book.)
3 Components and their Symbols In you exercise book:copy the headingwrite the name of each componentdraw its symbolcopy the information about the component.
4 Components and their Symbols CellA cell produces or stores electricity.Free electrons are produced by a chemical reaction between differing materials.
5 Components and their Symbols BatterySeveral cells joinedtogether in series.
6 Components and their Symbols LampA lamp contains a very thin wire (the filament) usually made of tungsten. The current passing through the filament causes it to get hot and glow.
7 Components and their Symbols SwitchA device used in a circuit to turn the flow of energy on or off.
8 Components and their Symbols AmmeterAAn instrument for measuring current or flow of electrons in a circuit. The unit used is the ampere (A).
9 Components and their Symbols VoltmeterVAn instrument for measuring the potential difference (or energy change) between two points in a circuit. The unit used is the volt (V).
10 Components and their Symbols ResistorA resistor is any material which is neither a good conductor of electricity nor an insulator. Resistors are important for varying the current in circuits.
11 Components and their Symbols RheostatA resistor whose value can be altered by adjusting the length of wire that carries the current.
12 Rules for drawing circuit diagrams. (Copy these into you exercise book) Correct symbols must be usedRuled straight lines for wiresNo gaps / breaks in linesDiagrams should be largeClick when you have finished.
13 Draw this circuit diagram. Componentsa celltwo lampammeterClick to next page for the correct answer