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

AI Thread Summary
Charging four parallel capacitors rated at 330V and 120µF each at 5V or 9V depends on the resistance in the circuit, including the wires and power source. Without series resistance, the charging time could be just a few seconds. Using a USB power source at 5V may take longer compared to a 9V battery, which could charge the capacitors in fractions of a second. The specific charging time will vary based on the total circuit resistance and the voltage used. Understanding these factors is crucial for effectively charging capacitors in applications like a coil gun.
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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