Which of the following describes an analogue signal?

An analogue signal is characterized by having infinite states between given voltage values. This means that it can represent a continuous range of values, which allows for a smooth variation in signal strength and sound, as opposed to being limited to distinct, separate values. In an analogue system, for example, a sound wave can be represented with varying amplitudes and frequencies, capturing the nuances of the sound without any abrupt changes or quantization, which are typical in digital signals.

This characteristic of analogue signals makes them particularly suitable for certain applications, such as audio recordings or traditional television broadcasts, where the aim is to accurately reflect the nuances of complex signals. In contrast, other options describe features that do not align with the fundamental nature of analogue signals. Finite states, discrete packets, and equal amplitude pulses suggest a more digital, quantized approach, which fundamentally differs from the continuous nature of analogue signals.