A) sound waves into electrical energy
B) sound waves into light rays
C) electrical energy into sound waves
D) sound waves into magnetic currents
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The correct answer is A) sound waves into electrical energy
A microphone is a type of transducer which converts sound, a form of into electrical energy. The most common type of microphone uses a coil of wire suspended in a magnetic field to convert sound waves into electrical signals.
When sound waves hit the diaphragm, it vibrates and moves the magnet near the coil, generating an electrical current. This current is then amplified and sent to a loudspeaker to be converted back into sound. Other types of microphones use electrostatic or electromagnetic techniques to convert sound waves into electrical signals.