1. LE LEGGI DI OHM Misurare V, i ed R Esercizi su Resistenze in serie e in parallelo
Lezione tratta dal sito
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 & Ohm’s 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 don’t 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 don’t 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 don’t 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