[url=http://www.ilsitodi.it/phisics_laboratory/charging_capacitor/charging_capacitor.html]http://www.ilsitodi.it/phisics_laboratory/charging_capacitor/charging_capacitor.html[/url][br][br][b]1-Measure the voltage Vc across the capacitor vs. time[/b][br][list][*]Fixing a value for the voltage Va (slider on power supply). [br][/*][*]Choose a value for C (slider C). [br][/*][*]Press RESET.[br][/*][*]Press START/STOP button. [br][/*][/list]The capacitor begins to charge: the pointer of the voltmeter begins to rise. [br]Measure the time when the voltmeter reaches a predetermined value of Vc. If the pointer of the voltmeter rises very quickly, You can press the STOP/START button to read the time. To continue press START/START[br]Transfer the experimental data to an Excel spreadsheet and analyse the results. [br][br][b]2-Measures the time that the capacitor takes to reach a voltage equal to 63% of Va.[/b][br][list=1][*]Compare this time with the time constant t= RC.[br][/*][*]Repeat measurements by selecting other values of Va and C (R is set at 1 Megaohm)[br][/*][/list]