Type A and B
These types of electric sockets are primarily found in use in North America and are distinguished by two flat, vertical inputs. In the type B, these slots would be accompanied by a third hole, for the ground.
These are capable of handling a variety of voltages and are the standard for Europe, the Middle East, most of Africa and the former Soviet Republics.
Type D is a rounded, grounded socket that will conduct 250 volts, in either 5 or 15 amp varieties. This is widely used in the Pacific, as well as the African nations of Namibia and South Africa.
Same as the D, but the Type E will have the rounded openings with an additional male prong at the top. This is the standard in France, Belgium, Poland, the Czech Republic, and Slovakia.
Like the C, this version has exposed grounds at the top and bottom that act upon contact. This is in use in Central and Eastern Europe, as well as Scandinavia, Portugal, Netherlands and Turkey.
In areas within Asia, powered at 13 amps, it provides 30 to 240 voltage through the socket.
Found in Israel and Palestine, it has four round holes, and will operate at 16 amps, 250 volts.
Three flat inputs in a triangle shape. This is a 10 amp plug, carrying 240 volts in the Australian area.
Type J and K
Three flat inputs, with 10 amps, 250 volts, the J is primarily used in Switzerland. The Danish standard K is a 13 amp plug with rounded contacts.
L is for Lire, and found primarily in Italy, rated for either 10 or 16 amps, with three round posts.