What is another term often used interchangeably with voltage?

The term "amplitude" is often used interchangeably with voltage, particularly in the context of signal processing and electrical engineering. Voltage, which can be understood as the electric potential difference between two points, is represented as the height or strength of an electrical signal. In many applications, amplitude denotes the peak value of this voltage, meaning it reflects how much energy is being carried in the signal. This relationship is crucial in understanding the behavior of electrical systems, where modifications to the amplitude can directly affect circuit performance and efficiency.

Current, resistance, and frequency represent different electrical parameters—current measures the flow of electric charge, resistance quantifies how much a material opposes the flow of current, and frequency refers to how often an event occurs in a period of time, typically in AC signals. Each of these concepts plays a unique role in electrical theory and practice, distinct from the concept of voltage.