Question

Which statement correctly describes the working of a loudspeaker?

• A. Electromagnetic induction principle, converting sound to electrical energy
• B. Electromagnetic induction principle, converting electricity to sound energy
• C. Motor principle, converting electrical energy to sound energy
• D. Motor principle, converting sound to electricity

Answer 1

Answer:

C. Motor principle, converting electrical energy to sound energy

A loudspeaker works on the principle of a motor, but in reverse. Instead of using electrical energy to produce mechanical energy (like a motor), a loudspeaker uses electrical energy to produce sound waves (mechanical energy). This process involves:

1. Electrical signals from an amplifier.

2. Magnetic field creation in the speaker coil.

3. Diaphragm movement due to magnetic field interaction.

4. Sound wave production through diaphragm vibration.