Can you explain the difference between AC and DC power?

In electrical engineering, AC (alternating current) and DC (direct current) are two types of electrical power transmission. The main difference between AC and DC power lies in the direction in which the current flows and how the voltage polarity changes over time.

AC Power:

AC power is when the current periodically reverses direction, following a sine wave pattern. This type of power is commonly used in household appliances and the power grid. AC voltage can be easily transformed using transformers.

DC Power:

DC power maintains a constant flow of current in one direction without changing polarity. It is used in batteries, electronic devices, and some power transmission applications. DC power does not require transformers for voltage conversion.

Understanding the difference between AC and DC power is crucial in electrical engineering as each type has its own distinct advantages and applications. AC power is efficient for long-distance power transmission, while DC power is suitable for electronic circuits and energy storage.