What defines the characteristics of a dynamic microphone?

The characteristics of a dynamic microphone are well-represented by the choice indicating that it is inexpensive and rugged without additional power needs. Dynamic microphones are notable for their durability, making them ideal for live performances and situations where resilience to handling and environmental factors is crucial. Additionally, they do not require external power sources, such as batteries or phantom power, which adds to their user-friendliness and versatility.

They operate using a diaphragm attached to a coil of wire situated within a magnetic field. This design allows them to convert sound waves into an electrical signal effectively and simply, which is another reason why they are commonly used in various settings, including live events and rehearsals.

In contrast, other types of microphones (like condenser microphones) often require power to operate and typically come with sensitivity levels that make them more suitable for controlled environments like studios, where clarity and detail in sound capture is paramount. The simplicity and robust nature of dynamic microphones make them a popular choice for everyday use, aligning perfectly with the characteristics described in the selected option.