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LE LEGGI DI OHM Misurare V, i ed R Esercizi su Resistenze in serie e in parallelo Lezione tratta dal sito Del Massachussets.

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Presentation on theme: "LE LEGGI DI OHM Misurare V, i ed R Esercizi su Resistenze in serie e in parallelo Lezione tratta dal sito Del Massachussets."— Presentation transcript:

1 LE LEGGI DI OHM Misurare V, i ed R Esercizi su Resistenze in serie e in parallelo Lezione tratta dal sito http://ocw.mit.edu/http://ocw.mit.edu/ Del Massachussets Institute of Tecnology Dal corso di Fisica 2

2 Classe 5^ C LST I.T.T. Tito Sarrocchi Siena a.s. 2011-2012 Hour 1: Working with Circuits Expt. 4. Part I: Measuring V, I, R

3 Last Time: Resistors & Ohms Law

4 Last time

5 Measuring Voltage & Current

6 Measuring Potential Difference A voltmeter must be hooked in parallel across the element you want to measure the potential difference across Voltmeters have a very large resistance, so that they dont affect the circuit too much

7 Measuring Current A ammeter must be hooked in series with the element you want to measure the current through Ammeters have a very low resistance, so that they dont affect the circuit too much

8 Measuring Resistance An Ohmmeter must be hooked in parallel across the element you want to measure the resistance of Ohmmeters apply a voltage and measure the current that flows. They typically dont work if the resistor is powered (connected to a battery)

9 EXERCISES

10 Exercise 1

11 Exercise 2

12 Exercise 3

13 Exercise 4

14 Exercise 5


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