Q:

Why do we use AC instead of DC?

A:

Quick Answer

In the United States alternating current, or AC, wins over direct current, or DC, as a source of electricity because it is more efficient; the voltage of the current is easy to manipulate. However, direct current is used for computers, batteries and LEDs, according to the U.S. Department of Energy.

 Know More

Full Answer

Alternating current, developed by Nikola Tesla, has a current that reverses 60 times per second. This creates a larger amount of induction than a current flowing continuously in one direction. Power plants send AC power efficiently to buildings at a high voltage with little resistance. A transformer then lowers the voltage for safe use with everyday products.

Learn more about Electrical

Related Questions

  • Q:

    What is a DC ammeter?

    A:

    DC ammeter, or direct current ammeters, detect the current by measuring the current of the electron flow in an electrical unit. Ammeters are connected to the electrical unit as part of the circuit, but are never connected to a voltage source as the high charge could damage the ammeter.

    Full Answer >
    Filed Under:
  • Q:

    What is the difference between Duracell and Energizer?

    A:

    Duracell and Energizer alkaline batteries adhere to the standard AAA through D battery sizes and 1.5 volt voltage. They differ in price and life span.

    Full Answer >
    Filed Under:
  • Q:

    What is electrical pressure called?

    A:

    The common term for electrical pressure is voltage. Voltage is defined as the amount of electrical pressure that results in 1 ampere given a resistance of 1 ohm, according to Bay Electric.

    Full Answer >
    Filed Under:
  • Q:

    What does a transformer do?

    A:

    A transformer converts a high voltage of alternating current power to a lower voltage while keeping it on the same frequency. High-voltage electricity is able to travel longer distances with less energy wasted, but homes and businesses use a lower voltage, so the electricity needs to be converted with transformers.

    Full Answer >
    Filed Under:

Explore