system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When resetting an electronic device (modem, cable box, cell phone, etc.) why do instructions say to wait 10-30 seconds after unplugging/turning off? Once the device no longer has power, does it really register the passage of time?
gpt
Lots of electronic devices have capacitors, which store a little bit of energy. It usually takes 10 seconds to empty all of these capacitors to fully turn off your device. 30 seconds is really just a generous amount to be almost certain.