Presentation on theme: "11.3 Measuring the Properties of Simple Circuits"— Presentation transcript:
1 11.3 Measuring the Properties of Simple Circuits (Pages )Homework: Page 461 # 1, 4, 5, 6, 8
2 Key Concepts: (Page 461)Circuit diagrams use standard symbols to represent the components of an electric circuit and their connections in the circuit.At a series connection, there is only one path along which electrons can flow.At a parallel connection, there is more than one path along which electrons can flow.An ammeter measures the current and is connected in series.
3 A voltmeter measures potential difference and is connected in parallel between the terminals of a load.Each pole connection on a meter must race back to the same type of terminal at the electrical source.The potential difference across a battery of cells in series is the sum of the potential difference across each cell.
4 Circuit Diagrams: What is a circuit diagram? It is diagram that uses standard symbols to represent the components in an electric circuit and their connections.
5 One Pathway or Multiple Pathways: 2. Compare a series circuit from a parallel circuit.In a series circuit, there is only one path along which electrons can flowIn a parallel circuit, there is more than one path along which electrons can flow
6 An ammeter measures current at a particular location in a circuit 4. Why must an ammeter be connected in series with a load, rather than in parallel, to correctly measure the current through the load?An ammeter measures current at a particular location in a circuitTherefore, it measures the flow of electric charge (current) at the point where a meter is connected in the circuit and is connected in series
7 5. What does a voltmeter measure? A voltmeter measures the potential difference in V (volts) between 2 points on a circuit.6. How is a voltmeter connected in a circuit?It is connected in parallel to measure the potential difference across a load.
8 7. What is the function of a multimeter? It can be used as an ammeter or a voltmeterWhen set to read current = connected in seriesWhen set to read potential difference = connected in parallel