Exploding Capacitor: Calculating Voltage for a 100uF 10V Capacitor

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Discussion Overview

The discussion revolves around the conditions under which a 100uF 10V electrolytic capacitor might explode when connected in reverse. Participants explore theoretical and practical aspects of capacitor behavior when subjected to reverse polarity.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant questions the voltage required to cause an explosion in a 100uF 10V capacitor when connected backwards.
  • Another participant suggests that theoretically, reversing the polarity of a polarized capacitor would lead to an explosion, encouraging experimentation with safety precautions.
  • A different viewpoint indicates that if the capacitor is electrolytic, any voltage could potentially cause it to explode, while also noting the practical implications of such experiments in educational settings.
  • One participant recounts a personal experience where a 9V battery was connected backwards to the capacitor without resulting in an explosion, prompting questions about the correctness of the connection.
  • Another participant raises the possibility that the connection may not have been reversed as intended, emphasizing the importance of verifying connections in such experiments.
  • A later reply expresses discomfort with the discussion, suggesting that there are more productive activities than attempting to explode capacitors.

Areas of Agreement / Disagreement

Participants express differing views on the conditions that lead to a capacitor explosion, with some asserting that any reverse voltage could be dangerous while others share personal experiences that contradict this notion. The discussion remains unresolved regarding the specific voltage thresholds and conditions necessary for an explosion.

Contextual Notes

There are assumptions regarding the type of capacitor and the conditions of the experiment that remain unverified, as well as a lack of consensus on the voltage required for an explosion.

Momosaida
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How many volts would i need to make a 100uF 10V capacitor explode if i plugged it in backwards?
 
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Theoretically the moment you reverse bias the polarized cap, the cap will explode. You can try it out, wear goggles.
 
If it is electrolytic, which you didn't say, then practically any voltage will cause it to explode. As Corneo says it easy to try...and it's also a good way to make lecturers/teachers/lab technicians/fellow students rather cross with you - both for wasting caps and making them jump every few minutes :P
 
Yes the capacitor is electrolytic. But when I connected a 9V battery to it backwards, it didn't explode. Why?
 
Last edited:
Are you sure it was backwards?...I know it's obvious but some people, even degree level students, get that wrong. 9V should be plenty to do the job, unless it's a huuge capacitor it might be a bit harder. I can't say I have every studied the ins and outs of reversing caps! :)
 
I'm uncomfortable with this thread. Momosaida -- there are better things for you to be doing with your time instead of trying to blow up capacitors.

Thread locked.
 

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