AC Current, or alternating current, is a type of electrical current that periodically reverses direction. Unlike direct current (DC), which flows in a single direction, AC current changes its flow direction many times per second. This characteristic makes it suitable for powering homes and businesses, as it can be easily transformed to different voltages. AC current is generated by power plants and is delivered through power lines to consumers. The frequency of AC current is measured in hertz (Hz), with the standard frequency in many countries being 50 or 60 Hz. This means the current changes direction 50 or 60 times each second.