anonymous
  • anonymous
For use in DC Circuit calculations, can a battery be modeled as a capacitor?
Physics
katieb
  • katieb
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TuringTest
  • TuringTest
I don't see how because the voltage across the battery is constant (the EMF) whereas the voltage across a charging capacitor increases with time
anonymous
  • anonymous
TT is as usual correct. A battery has an internal source of energy that supplies a potential difference between its terminals, whereas a capacitor *stores* energy (as opposed to generating energy).
Kainui
  • Kainui
Now suppose you have only a capacitor and a resistor in a circuit? Can you measure the voltage and current?

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