Stable Oscillator Output has constant _________.

The correct answer is: Amplitude and frequency

Explanation:

An oscillator is an electronic device used to generate a signal, usually in the form of a sine wave or square wave. A stable oscillator maintains a constant amplitude and frequency in its output over time, under specified conditions like temperature and supply voltage.

1) Amplitude: It refers to the maximum extent of vibrational movement in the oscillator output. For a stable oscillator, its output wave's amplitude remains constant over time.

2) Frequency: It refers to the number of oscillating cycles per unit of time. A stable oscillator maintains a constant frequency.

Voltage and resistance can influence the operation of an oscillator, but they are not necessarily kept constant in a stable oscillator output. Similarly, temperature and movement (often seen in mechanical oscillators) can affect the oscillator, but again, they are not necessarily what's kept constant in a stable electronic oscillator. As for the current, depending on the specific oscillator design, a constant amplitude and frequency output does not necessarily mean a constant current.