What are the differences between AC and DC current?

Differences between AC and DC Current

AC (Alternating Current) and DC (Direct Current) are two types of electrical currents that differ in several key aspects:

• Direction of Flow: The main difference between AC and DC current is the direction in which the electric charge flows. In AC current, the flow of electric charge changes direction periodically, whereas in DC current, it flows in only one direction.
• Usage: AC current is commonly used in homes and businesses for powering electrical appliances and devices. DC current is often used in batteries, electronics, and automotive applications.
• Transmission: AC current is more efficient for long-distance transmission over power lines due to the ability to easily step up and down voltage levels. DC current is typically used for shorter distances or in situations requiring high voltage, such as in power grids.
• Waveform: AC current has a sinusoidal waveform, oscillating between positive and negative values. In contrast, DC current has a constant voltage level over time with no oscillations.

Understanding the differences between AC and DC current is essential for electrical engineers, technicians, and anyone working in the field of electronics.