The two devices in a computer that should be considered "black boxes," and should never be opened due to risks involving charged capacitors are MONITOR and POWER SUPPLY.
Explanation:
- Physical contact or close proximity to the open power supply caused a discharge from the capacitor that resulted in an electric shock. Capacitors can discharge current even when not energized because they hold a charge for some time after the power is turned off.
- To do harm to your body, the voltage across the capacitor's terminals must be high enough to cause a harmful effect on you. There are no hard rules for at what voltage things become harmful, but a common 'rule of thumb' is that DC up to 48 Volt is considered low voltage. So a capacitor charged to a voltage below 48 V is fairly safe.
- A charged capacitor can be very dangerous, so it's important that you avoid coming into contact with the terminals at all times.
Germany. Johannes Guten in Mainz, Germany
Answer:
A string containing all lowercase letters and numerals and ending with a- Or D
Answer:
C
Explanation:
You can automatically cross out A, as they do not hinder communication. B can be crossed out as well, since kids should use these websites for help. Using the websites can be beneficial and give a learning edge. D is kind of correct, but isn't the best answer.
C is the answer because the websites are public data. People get on the website for help with certain concepts, and helps identify problems to their solution. <em>(Public data found on these forums provides widespread access to identified problems and their solutions.
)</em>
