The article designations may change with the code cycle year.
In the 2005 NEC see table 310-16 (allowable ampacities for conductors), also article 240.4(D) (protection of small conductors), also table 210.24 (summary of branch circuit requirements for muti-outlet branch circuits)
it tells you how much mass is in that object
If you are talking about a plug rated at 20 A and not that the device it is attached to as drawing 20 A then nothing will happen unless the device along with other devices on the same circuit trip the breaker. The rating of 20 A on a plug tells you the maximum current that should go through the plug. The 15 A breaker protecting the outlet ensures that no more than 15 A can go through your 20A plug.
it tells you what it does and tells you what it makes
I am not trying to be mean here, but the fact that you need to ask this question tells me you should have a qualified electrician do this for you. The age of your home will have alot to do with what needs to be done, as will your local electrical codes. +++ If by wall switch you mean one for controlling lamps... you shouldn't! (Unless it's the practice in your country to run both power outlets and lighting off a single, common ring-main: in the UK the lighting and power circuits are separated at the main fuse or circuit-breaker box.)
is a card that tells you the chemicals and what they can do to you. is a card that tells you the chemicals and what they can do to you.
article v important because it tells
article 4
article 1
Article one
Article v
Article V or 5
Article one
Article 4 of the U.S. Constitution tells what the states can do. This article also provides a clear guideline as to the rights and responsibilities of the federal government as well.
Headline.
the second article of which explained the executive branch of government (president)
There are a few article that tells the purpose of the constitution. The most read article would be the 12th Amendment.
Article 5.