Final answer:
Mica and disc capacitors are commonly used in audio amplifiers. Mica capacitors are used in coupling circuits and tone control circuits, while disc capacitors are used in bypass and decoupling applications.
Step-by-step explanation:
Mica and disc capacitors are commonly used in audio amplifiers. These capacitors are used to store and release electrical energy, and they can be found in various parts of the amplifier circuit.
For example, mica capacitors are often used in coupling circuits to block DC signals and allow only the desired audio frequency signals to pass through. They are also used in tone control circuits to tailor the frequency response of the amplifier.
Disc capacitors, on the other hand, are commonly used in bypass and decoupling applications. They provide a low impedance path for high-frequency signals, preventing them from interfering with the audio signal.