Introduction

Electricity has been one of the great inventions of human beings. From ancient Greece, where the first electrical phenomena were discovered, to the present day, electricity has evolved in surprising ways. Nowadays, we have a large number of electrical devices that make our daily lives easier. However, do we really know how it works and what types of electric current exist? In this article we are going to talk about the difference between alternating current and direct current.

DC

Direct current (DC) is a type of electric current that flows in the same direction constantly. That is, electric current flows from a positive pole to a negative pole. This type of electrical current is used in electronic devices that require a constant power source, such as batteries. In addition, direct current is used in industrial applications, such as welding or electrophoresis.

Alternating current

Alternating current (AC) is a type of electrical current that changes direction periodically and its value varies over time. That is, electric current flows from a positive pole to a negative pole, but after a while it changes direction. Alternating current is used to supply electrical energy to our homes and buildings. This current is produced in power plants and transmitted through high voltage lines and transformed into low voltage in transformers.

Comparison between direct current and alternating current

• Direct current always flows in the same direction, while alternating current changes its direction periodically.
• Direct current is used in electronic devices that require a constant power source, while alternating current is used in the supply of electrical energy that reaches our homes.
• Direct current is produced in batteries, while alternating current is produced in power plants.

It is important to note that both direct current and alternating current have advantages and disadvantages. Direct current is more stable and consistent, while alternating current allows for long distance transmission and power regulation.

Conclusion

In summary, the difference between alternating current and direct current lies in the direction and variation of the electrical flow. While direct current flows in the same direction, alternating current changes direction and its value varies with time. Both currents are useful in different applications and are essential in our daily lives.

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