Inductor in a DC Circuit. DC-Circuits > Inductor in a DC Circuit. An Inductor is a passive device that stores energy in its Magnetic Field and returns energy to the circuit whenever required. An Inductor is formed by a cylindrical Core with many Turns of conducting wire. Figure 1 and Figure 2 are the basic structure and the schematic symbol of the Inductor.
Charlemagne was crowned Emperor of the Roman People on December 25,  800 AD, by Pope Leo III, in St. Peter's Basilica, in Rome. His  empire, however, is not usually consider â¦ ed the same as the Holy  Roman Empire.    Today, the empire of which he was crowned is usually called the  Carolingian Empire.
Charlemagne was also a believer in the theory of the four empires after which the end of the world was prophesied. When the pope bestowed the title of emperor on him, the Roman empire lived on in Charlemagne. This translatio imperii had (once again) prevented the world from coming to an end.