Presentation on theme: "Circuit Diagrams (Click the left mouse button to advance to the next slide.)"— Presentation transcript:
Circuit Diagrams (Click the left mouse button to advance to the next slide.)
Circuit Diagrams We do not normally draw the equipment but use symbols as a kind of shorthand. (Write the heading Circuit Diagrams in your exercise book.)
Components and their Symbols In you exercise book: copy the heading write the name of each component draw its symbol copy the information about the component.
Components and their Symbols Cell A cell produces or stores electricity. Free electrons are produced by a chemical reaction between differing materials.
Battery Components and their Symbols Several cells joined together in series.
Lamp Components and their Symbols A 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.
Switch Components and their Symbols A device used in a circuit to turn the flow of energy on or off.
Ammeter A Components and their Symbols An instrument for measuring current or flow of electrons in a circuit. The unit used is the ampere (A).
Components and their Symbols An instrument for measuring the potential difference (or energy change) between two points in a circuit. The unit used is the volt (V). Voltmeter V
Resistor Components and their Symbols A resistor is any material which is neither a good conductor of electricity nor an insulator. Resistors are important for varying the current in circuits.
Components and their Symbols A resistor whose value can be altered by adjusting the length of wire that carries the current. Rheostat
Rules for drawing circuit diagrams. (Copy these into you exercise book) Correct symbols must be used Ruled straight lines for wires No gaps / breaks in lines Diagrams should be large Click when you have finished.
Draw this circuit diagram. Click to next page for the correct answer Components a cell two lamp ammeter
Draw this circuit diagram. a cell a lamp voltmeter across the lamp rheostat (variable resistor) Components Click to next page to view the correct answer
Draw this circuit diagram. three cells two lamps a switch ammeter Components voltmeter across one lamp Click to next page to view the correct answer
Draw a circuit that contains: a battery an ammeter a lamp a switch all joined in series. Draw a voltmeter joined across the lamp.