ACjännitteisiin
ACjännitteisiin refers to alternating voltage in Finnish. Alternating voltage is an electric potential that periodically reverses direction. Unlike direct voltage (DC), where the voltage polarity remains constant, AC voltage oscillates, typically in a sinusoidal pattern. This oscillation means that the voltage rises to a peak in one direction, falls through zero, reaches a peak in the opposite direction, and then returns to zero, repeating the cycle.
The key characteristic of AC voltage is its frequency, measured in Hertz (Hz), which indicates the number
AC voltage is fundamental to modern electrical power systems. It is generated by alternators and can be