Physics 201- Introduction to Electricity & Magnetism
October 25- Charging & Discharging Capacitors






  Quantitative Charging and Discharging

Below you see a circuit composed of a battery, resistor, capacitor and switch.  Initially the capacitor is uncharged and the switch is open (not connected to 1 or 2).

Once the switch is in position 1, the battery, capacitor and resistor are in series.  We can therefore write the voltage equation for this loop:

For now, you'll have to trust me (even though I tell you to not trust me or the book and find the answer for yourself).  The solution to this euqation is:



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Jeff Phillips
Loyola Marymount University
Fall 2002