A.C. stands for alternating current. Likewise D.C. stands for direct current.
Data representation
Copper Aluminum Revised. These letters will appear on switches and electrical outlets where Aluminum wiring has been installed.
There are lots of examples unused single letters and pairs of letters- two most commonly used by chemists when they wan't to discuss generic properties, are X (often used to represent the halogens), M (used for metals)
A: is the first floppy drive and is seldom in use today. C: is most often the first master hard drive partition. D: is most commonly the CD Rom in a system with a single hard drive partition.
25% of the letters in human DNA are identical, the reason for this is that there are only four different letters
ampere - noun - unit of electrical current
DC are the letters for direct current AC are the letters for alternating current
DC are the letters for direct current AC are the letters for alternating current
Using all the letters, you get chemical
Alternating Current/Direct Current
I think the answer is Copper.
They are the most commonly used letters in the English language
Uppercase letters are ABCDEFGHIJKLMNOPQRSTUVWXYZ. They are also commonly called capital letters, as opposed to the lowercase letters abcdefghijklmnopqrstuvwxyz. The letters are so named because hundreds of years ago typesetters had large racks full of letters which had to be manually put in place when producing a page of a newspaper or a book, and the capital letters were commonly stored in the upper case of the rack with the small letters in the lower case.
Plane mirrors(regular mirrors in households) laterally invert an object's image; letters are also laterally inverted and so they look different while seen in a mirror.
That means convection current
The data is internally stored as bits (ones and zeroes). To interact with humans, the keyboard uses letters; but as soon as you press a key, a series of electrical circuits are activated, and this is represented by zeroes and ones (for example, zero when no current flows, and one when a current flows - or the other way round, depending on the convention used).
Mega volt amperes