Electricity flows in two ways – Alternating Current or Direct Current . The difference between the two is the way the electron flows.
Owing to Thomas Edison - DC power was born by creating a magnetic field near a wire, which caused the electrons to flow in a single direction, from negative to positive.
Nikola Tesla came up with AC power because a it was a safer way to transmit power over large city distances. Instead of using a steady magnet, he used a rotating magnet. So as the magnets position changed so did the flow of electrons.
Owing to Thomas Edison - DC power was born by creating a magnetic field near a wire, which caused the electrons to flow in a single direction, from negative to positive.
Nikola Tesla came up with AC power because a it was a safer way to transmit power over large city distances. Instead of using a steady magnet, he used a rotating magnet. So as the magnets position changed so did the flow of electrons.
Difference Between AC And DC
| Alternating Current | Direct Current |
| The electrons keep on switching their path. AC current can travel over longer distances. | The electrons flow in one direction. DC current cannot travel far otherwise it would lose energy. |
| Rotating magnetism | Steady magnetism |
| Frequency of an AC current is usually 50Hz or 60Hz. i.e. current is varying over time. | Frequency of DC current is zero. i.e. Current is constant over a period of time. |
| Used popularly for many applications like fans, air conditioners. Regular supply to homes is AC. | Used mostly where mobility of electric power is essential. e.g. cell phones, batteries in vehicles etc. |
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