WAEC Physics 2016 Objective — Question 14
Question 14 of 50 from the West African Examinations Council (WAEC) Physics 2016 Objective paper, with the correct answer and a full explanation.
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14. The mouth piece of a telephone hand set converts A. electrical energy to sound energy B. sound energy to electrical energy C. sound energy to radiowave D. radiowave to sound energy
- A. electrical energy to sound energy
- B. sound energy to electrical energyCorrect
- C. sound energy to radiowave
- D. radiowave to sound energy
Explanation
When someone speaks into the mouthpiece (microphone) of a telephone, the varying speech current set up is the sound wave converted into electrical energy.
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