How long to charge 4 parallel capacitors with 5V or 9V?

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Discussion Overview

The discussion revolves around the time required to charge four parallel capacitors at either 5 volts or 9 volts. Participants explore the implications of different voltage sources and the characteristics of the capacitors involved, specifically in the context of a coil gun application.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant inquires about the charging time for four parallel capacitors rated at 330V and 120µF each when charged at 5V or 9V.
  • Another participant suggests that without series resistance, the charging time could be just a few seconds or less.
  • It is noted that the charging time is influenced by the resistance of the wires and the battery or adapter used.
  • A participant mentions that using a lead-acid battery may result in charging times of just fractions of a second.

Areas of Agreement / Disagreement

Participants express varying views on the charging time, with some suggesting it could be very short while others emphasize the importance of resistance in determining the actual time. No consensus is reached on the exact charging duration.

Contextual Notes

The discussion does not specify the resistance values or other parameters that could affect the charging time, leaving some assumptions unaddressed.

Who May Find This Useful

Individuals interested in capacitor charging times, particularly in applications like coil guns, may find this discussion relevant.

Evil Genius
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I was wondering how long would it take to charge a capacitor at 5volts if there are 4 parallel. This is the details on the Capacitors. 330v 120uF each. So what is the best way to charge them by usb which gives me 5v or using a 9 volt battery and for how long.
 
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please i really need help on this
 
please people i really need help on this matter it is for my coil gun
 
If there is no series resistance I would think it would just takes few seconds, or less.
 
It depends on the resistance, both of the wires and the battery/adapter. If you use a Pb battery, I think it takes just fractions of a second
 

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