Presentation on theme: "Circuit Diagrams Basic Electricity"— Presentation transcript:
1Circuit Diagrams Basic Electricity (Click the left mouse button to advance to the next slide.)
2Circuit DiagramsWe do not normally draw the equipment but use symbols as a kind of shorthand.(Write the heading Circuit Diagrams in your exercise book.)
3Components and their Symbols In you exercise book:copy the headingwrite the name of each componentdraw its symbolcopy the information about the component.
4Components and their Symbols CellA cell produces or stores electricity.Free electrons are produced by a chemical reaction between differing materials.
5Components and their Symbols BatterySeveral cells joinedtogether in series.
6Components 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.
7Components and their Symbols SwitchA device used in a circuit to turn the flow of energy on or off.
8Components and their Symbols AmmeterAAn instrument for measuring current or flow of electrons in a circuit. The unit used is the ampere (A).
9Components 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).
10Components 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.
11Components and their Symbols RheostatA resistor whose value can be altered by adjusting the length of wire that carries the current.
12Rules 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.
13Draw this circuit diagram. Componentsa celltwo lampammeterClick to next page for the correct answer