DC CURRENT

DEFINATION OF DC CURRENT........

Direct current (DC) is an electric current that is uni-directional, so the flow of charge is always in the same direction. As opposed to alternating current, the direction and amperage of direct currents do not change. It is used in many household electronics and in all devices that use batteries.

What IS direct current?

Direct current. A type of electricity transmission and distribution by which electricity flows in one direction through the conductor, usually relatively low voltage and high current (such as from a battery).

How  DC current work?

Direct current or DC electricity is the continuous movement of electrons from negative to positive through a conducting material such as a metal wire. A DC circuit is necessary to allow the current or steam of electrons to flow. In a circuit, the direction of the current is opposite the flow of electrons.

Can direct current kill you?

Effects of an AC or DC Currents on the Human Body ::---If it is from the hand to the foot, it does not pass through the heart, and then the effects are not so lethal. ... In terms of fatalities, both kill but more milliamps are required of DC current than AC current at the same voltage.

Why DC current is not used in homes?

Large transformers are used to run transmission lines at high voltages in order to keep losses to a minimum. But high voltage is dangerous, particularly to life, so bringing it into a house would not be an acceptable risk. ... DC arcs do not "quench" as easily (because voltage does not go through zero).

Are phones AC or DC?

That is why portable electronics – flashlights, cell phones, laptops – use DC power; they have to store it. ... Because the electric grid provides AC, the electricity must get converted to DC when you want to charge a portable device. This conversion is done by a “rectifier”.