The electrical energy output from the microphone is less than the sound energy input.
(i) State the principle of conservation of energy.
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Explanation:
A microphone converts sound into a small electrical current. Sound waves hit a diaphragm that vibrates, moving a magnet near a coil. ... In a condenser microphone, the incoming sound vibrates one plate of a capacitor. The varying capacitance is converted into a corresponding electrical signal.
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