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Discussion in 'Electronics Homework Help' started by sugnip, Dec 2, 2012.

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  1. sugnip


    Dec 2, 2012
    how would you carry out a suitable test to determine the relationship between voltage and current when charging and discharging a capacitor
  2. Username99


    Apr 26, 2012
    I'm completely open to correction here, but if you measured the voltage while charging the capacitor, take readings at lets say, 5 second time intervals (Using a stopwatch) and then done the same procedure only discharging this time, then draw two graphs and look at the curve. Again I could be completely wrong and there are plenty of people on this website with far more knowledge regarding electronics than me, but I had a go shur :D
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    For this test to be meaningful, the capacitor needs to have a resistance in series with it.

    I would measure the voltage across the series resistor (effectively measuring current) and the voltage across the capacitor, and plot both these values against time.
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