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Q.

Is it true that a microphone converts sound energy into electrical energy but an electric buzzer does the reverse?

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a

True

b

False

answer is A.

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Detailed Solution

This is because when sound wave travels in a transducer then it vibrates and moving a magnet near a coil due to this a microphone convert sound energy into electrical energy. Therefore an electric buzzer converts electrical energy to sound energy due to speaker. Hence, when a current is passed through a buzzer then a ferromagnetic disk inside a buzzer creates sound Thus, the statement is true.

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