Concept:A microphone converts sound energy (sound waves) into electrical energy (electrical signals).
Explanation:A microphone has a flexible diaphragm attached to a coil.
A permanent magnet creates a magnetic field around the coil.
When sound waves strike the diaphragm, it vibrates.
The coil moves with the diaphragm inside the magnetic field.
This motion induces an electric current in the coil, producing an electrical signal.
Thus, sound waves (input) are transformed into electrical signals (output).
Answer:B. sound waves to electrical signals
