Q:

Who invented direct current?

A:

The direct current system of generating and distributing electric power was invented by Thomas Edison, one of America’s foremost inventors and businessmen. Edison, who also famously invented the light bulb, was a staunch proponent of direct current and promoted it fiercely over its rival alternating current.

Know More

Full Answer

In the early days of electric power, there was no practical way to change the voltage from the generator to the load, its intended source. Because incandescent lights were the primary target for electricity, most DC voltages were kept around 100 watts. This low voltage allowed for safe electricity distribution and minimized insulation needs. Gradually, alternating current, or AC, became the dominant form of power transmission because of its ability to vary voltages and transmit over longer distances.

Learn more in Inventions
Sources:

Related Questions

  • Q:

    When was algebra invented?

    A:

    Algebra, in its earliest form, was first used by the Babylonians as early as 1700 B.C. It is possible that algebra was used before this time, but historical records are incomplete. However, the algebra used by early civilizations was much more rudimentary than the algebra currently in use today.

    Full Answer >
    Filed Under:
  • Q:

    What was invented in 1998?

    A:

    Items invented in 1998 include Windows 98, the iMac computer and the MP3 player. Viagra was also approved for use by the United States Food and Drug Administration in 1998.

    Full Answer >
    Filed Under:
  • Q:

    Who invented longitude and latitude?

    A:

    The concept of mapping the Earth using two sets of parallel lines, one running from north to south and the other from east to west, was first utilized by the Greek Eratosthenes. Hipparchus, another Greek, was the first to use these lines as coordinates for specific locations.

    Full Answer >
    Filed Under:
  • Q:

    Who invented flip-flops?

    A:

    StyleList claims that Egyptians invented the first version of the flip-flop sandal around 4000 B.C. The oldest existing pair of flip-flops is on display at the British Museum.

    Full Answer >
    Filed Under:

Explore