Understanding Capacitance and Impedance in Series Circuits

AI Thread Summary
Capacitive reactance is inversely proportional to capacitance, meaning a higher capacitance results in lower impedance. A 25μF capacitor has twice the impedance of a 50μF capacitor due to this relationship. When capacitors are connected in series, their total capacitance decreases, leading to increased impedance. Therefore, two 50μF capacitors in series create a 25μF equivalent, which has double the impedance of one 50μF capacitor. Understanding these principles clarifies the behavior of capacitors in series circuits.
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Homework Statement


This is not necessarily a homework question, just a conceptual one.

I was reading up on capacitors, and an example said that a 25uF capacitor has TWICE the impedence of a 50uF capacitor. Can someone explain what this means? I would have thought that a capacitor with higher capacitance would impede a circuit more...

Homework Equations

The Attempt at a Solution

 
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Do you have the formula for capacitive reactance? It clearly tells you that capacitive reactance is inversely proportional to the capacitance.
 
You could make a 25μF capacitance by connecting two 50μF capacitors in series. For the pair in series you have double the impedance of a single capacitor because impedances in series add.
 
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