Capacitor Discharge: A Simple Explanation

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SUMMARY

The discussion clarifies the process of capacitor discharge between two capacitors of different capacitances. It establishes that when two capacitors are connected, they behave as a single larger capacitor, resulting in equal voltage across both capacitors after discharge. The charge redistribution occurs because the higher voltage capacitor discharges into the lower voltage capacitor until equilibrium is reached, ensuring that the voltages equalize due to the fundamental properties of capacitors in parallel.

PREREQUISITES
  • Understanding of basic capacitor principles
  • Knowledge of electrical charge and voltage concepts
  • Familiarity with parallel circuit configurations
  • Basic grasp of electrical energy conservation
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Electronics enthusiasts, students learning about circuit theory, and anyone interested in understanding capacitor behavior in electrical systems.

Rohan1997
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Could someone explain to me how a capacitor discharges through another capacitor of different capacitance. Why does the voltage on the second capacitor have to equal the voltage on the first capacitor after the discharge.
Please explain the concept to me in simple terms, do not go into university physics as I won't be able to understand it.
 
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Let's start with the end state. You ask why the voltages on the two caps has to be the same after settling. Do you understand that two capacitors in parallel is exactly the same as a single larger capacitor? That being the case, how could they possibly have different voltages?

In terms of discharging the one with higher voltage onto the one with lower voltage to make the voltages equal, that's really due to the same concept. You basically have one larger cap but with an unequal distribution across the plates so the charge evens itself out and the voltages become the same.
 

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