How does AC differ from DC in terms of flow?

In understanding the differences between alternating current (AC) and direct current (DC), it's important to note how each type of current behaves. AC flows back and forth, meaning that the direction of the current changes periodically. This oscillation allows AC to be transmitted over long distances more efficiently and is commonly used in power lines and household electrical outlets.

On the other hand, DC flows in one direction only. This means that the electrical charge flows consistently in a single path, providing a steady and unidirectional current. This characteristic of DC makes it suitable for specific applications, such as powering batteries or electronic devices where a stable voltage is required.

The other options presented do not accurately reflect the fundamental differences between AC and DC. For instance, the statement about AC being more powerful than DC overlooks the fact that power can be almost equivalent when comparing systems designed for each type of current. Additionally, the assertion that AC can only be used in low-voltage applications is misleading, as AC is frequently utilized for high-voltage power transmission as well.